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“Summary of Israel's Unbelief”· John 12:37–43
Translation
King James Version
¶ But though he had done so many miracles before them, yet they believed not on him:
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KJV (with Strong's)
But G1161 though he G846 had done G4160 so many G5118 miracles G4592 before G1715 them G846, yet they believed G4100 not G3756 on G1519 him G846:
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Complete Jewish Bible
Even though he had performed so many miracles in their presence, they still did not put their trust in him,
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Berean Standard Bible
Although Jesus had performed so many signs in their presence, they still did not believe in Him.
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American Standard Version
But though he had done so many signs before them, yet they believed not on him:
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World English Bible Messianic
But though he had done so many signs before them, yet they didn’t believe in him,
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Geneva Bible (1599)
And though he had done so many miracles before them, yet beleeued they not on him,
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Young's Literal Translation
yet he having done so many signs before them, they were not believing in him,
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Summary

John 12:37 serves as a poignant and sobering summary of Jesus' public ministry in the Gospel of John, highlighting the tragic paradox that despite performing an abundance of miraculous signs designed to reveal His divine identity and mission, the overwhelming majority of those who witnessed these powerful demonstrations remained in a state of persistent unbelief. This verse marks a critical turning point, underscoring the profound spiritual resistance encountered by the Son of God even in the face of undeniable evidence, setting the stage for His impending passion and the shift in focus from public teaching to private instruction of His disciples.

Context

Literary Context

John 12:37 concludes Jesus' public ministry as recorded in John's Gospel, acting as a somber epilogue to His final public discourse. Immediately preceding this verse, Jesus delivers a profound message about His impending "lifting up" (referring to His crucifixion and subsequent glorification), the judgment of the world, and the urgent call to "walk while ye have the light" before darkness overtakes them (John 12:35). This discourse culminates in a final plea for belief, yet verse 37 reveals the tragic outcome of His extensive efforts. Following this verse, John immediately turns to Old Testament prophecy (Isaiah 53:1 and Isaiah 6:9-10) in John 12:38-41 to explain that this widespread unbelief was not unforeseen but was, in fact, divinely foretold, thereby affirming God's sovereign plan even in the face of human rejection.

Historical & Cultural Context

Jesus' ministry unfolded within a complex historical and cultural landscape. First-century Judaism was deeply rooted in the expectation of a Messiah, often envisioned as a political deliverer who would overthrow Roman rule and restore Israel's national glory. Miracles, or "signs" (Greek: sēmeia), were widely understood as divine authentication for prophets and messianic claimants. Jesus performed numerous such signs—healing the sick, casting out demons, raising the dead, and feeding multitudes—which should have, by Jewish understanding, validated His claims. However, the prevailing religious authorities, primarily the Pharisees and Sadducees, viewed Jesus as a threat to their power and traditions. Their hardened hearts, coupled with a misunderstanding of the Messiah's true nature (a suffering servant rather than a conquering king), led them to reject the very evidence they claimed to seek. The cultural emphasis on tradition and communal identity also made it difficult for many to break from established religious norms and embrace a new, revolutionary teaching.

Key Themes

John 12:37 encapsulates several profound themes central to John's Gospel and biblical theology. Firstly, it powerfully illustrates the theme of unbelief in the face of overwhelming evidence. Despite Jesus performing "so many miracles" (which John consistently presents as "signs" pointing to His divine identity, as seen in John 2:11), a significant portion of the populace, particularly the religious leaders, refused to believe. This highlights that faith is not merely an intellectual assent to facts but a spiritual reception of truth that requires a willing heart. Secondly, the verse underscores the theme of spiritual blindness and hardness of heart. The refusal to believe, despite clear divine revelation, points to a deeper issue than a lack of information; it suggests a volitional resistance to God's truth, often rooted in pride, fear of social ostracism, or attachment to worldly status (John 12:42-43). Finally, the verse introduces the theme of fulfillment of prophecy, as John immediately connects this unbelief to the ancient words of Isaiah, demonstrating that even human rejection serves God's sovereign purposes and confirms the divine blueprint for the Messiah's mission (John 12:38).

Exposition and Analysis

Key Word Analysis

miracles sēmeîon' G4592

This word, G4592, refers to an "indication, especially ceremonially or supernaturally." In John's Gospel, sēmeîon is consistently used to denote "signs" rather than mere wonders. These acts were not simply displays of power but were intentional pointers designed to reveal Jesus' true identity as the Son of God and the Christ. John records seven such signs, each progressively revealing more about Jesus' nature and mission, culminating in the raising of Lazarus, which directly preceded this final public discourse. The fact that "so many" of these signs were performed underscores the abundance of evidence provided.

believed pisteúō' G4100

G4100 signifies "to have faith (in, upon, or with respect to, a person or thing), i.e. credit; by implication, to entrust (especially one's spiritual well-being to Christ)." The imperfect tense of the verb in Greek (ἐπίστευον, episteuon) suggests a continuous or ongoing state of not believing, indicating a persistent refusal to place trust and commitment "into" Jesus, despite the repeated and compelling evidence. This is more than a simple intellectual acknowledgment; it implies a lack of deep, abiding trust and personal surrender.

not ou' G3756

G3756 is the absolute negative adverb, indicating a strong and definite negation. When combined with pisteúō, it emphasizes the complete absence of belief. It is not merely a partial or hesitant belief, but a resolute non-belief, highlighting the tragic and definitive nature of their rejection of Jesus.

Verse Breakdown

"But though he had done so many miracles before them,"

This clause establishes the undeniable reality of Jesus' powerful works. The phrase "so many" (G5118, tosoûtos) emphasizes the sheer quantity and magnitude of the signs performed. These were not isolated incidents but a consistent pattern of supernatural activity that was publicly witnessed ("before them," G1715, émprosthen). The "miracles" (G4592, sēmeîon) were God's self-revelation, designed to authenticate Jesus' claims and draw people to faith.

"yet they believed not on him:"

This clause presents the shocking contrast and the tragic outcome. Despite the overwhelming evidence provided by the "so many miracles," the people's response was one of persistent unbelief. The preposition "on" (G1519, eis) with "him" (G846, autós) signifies a deep, personal commitment and trust into Jesus, which was conspicuously absent. This highlights that faith is not merely an intellectual acknowledgment of facts but a volitional act of trusting and committing to the person of Jesus. Their failure to believe was not due to a lack of evidence, but a spiritual resistance.

Literary Devices

John 12:37 masterfully employs several literary devices to convey its profound message. The most prominent is Irony, as the verse presents a stark contrast between the abundance of divine revelation (Jesus' "so many miracles") and the human response of resolute unbelief. This creates a tragic irony, where the very acts meant to elicit faith instead highlight the recalcitrance of the human heart. Closely related is Juxtaposition, where the two opposing realities—the extensive display of divine power and the persistent human rejection—are placed side-by-side for dramatic effect, amplifying the gravity of the unbelief. Furthermore, the verse functions as a Summary Statement, providing a concise and definitive conclusion to Jesus' public ministry in John's narrative. It encapsulates the core tension of the Gospel: the Light has come into the world, but the darkness has not overcome it, and many have preferred the darkness. This summary sets the stage for the subsequent shift in John's narrative from public discourse to Jesus' private teachings and passion.

Theological and Thematic Connections

John 12:37 is a profound theological statement on the nature of faith, revelation, and human responsibility. It underscores the sobering truth that divine revelation, even in its most spectacular forms, does not automatically compel belief. Faith is portrayed not as a mere intellectual assent to observed facts, but as a spiritual reception of truth that involves a volitional turning of the heart towards God. The persistent unbelief, despite overwhelming evidence, points to the reality of spiritual blindness and the hardening of hearts, a phenomenon that the biblical narrative frequently laments. This verse highlights the mystery of human freedom and responsibility in responding to God's grace, while simultaneously affirming God's sovereign plan, as even this unbelief was foretold in prophecy. It reminds us that while God provides ample reason to believe, true faith is ultimately a gift of grace that must be received with a receptive spirit.

Reflection and Application

John 12:37 serves as a powerful and sobering mirror for contemporary believers and seekers alike. It challenges the common misconception that more evidence or more spectacular displays of power would automatically lead to widespread faith. Instead, it reveals that the barrier to belief is often not a lack of proof, but a spiritual resistance, a hardened heart, or a preference for darkness over light. For us today, this means recognizing that while God continues to provide evidence of His presence and power through creation, changed lives, and answered prayers, true faith remains a matter of the heart's willingness to respond to His invitation. We are called to cultivate a receptive spirit, to humbly acknowledge our need for God, and to actively choose to trust Him, rather than allowing skepticism, pride, or worldly attachments to blind us to His truth. This verse encourages us to examine our own hearts: are we truly open to God's revelation, or are there areas where we resist His truth, perhaps because it challenges our comfort zones or preconceived notions? The call is to respond to the light while it is available, before the opportunity passes.

Questions for Reflection

  1. What are some of the "miracles" or "signs" God has performed in your life or that you have witnessed in the lives of others? How have you responded to them?
  2. In what ways might our own hearts become hardened or resistant to God's truth, even when evidence is present?
  3. How does this verse challenge the idea that intellectual knowledge alone is sufficient for true faith? What else is required?
  4. Considering the urgency in Jesus' preceding words ("walk while ye have the light"), what does John 12:37 teach us about the consequences of delaying or refusing to believe?

FAQ

Why did people not believe Jesus despite seeing so many miracles?

The primary reason for their unbelief, as highlighted by John, was not a lack of evidence but a spiritual condition—a hardened heart and spiritual blindness. While Jesus performed numerous powerful signs (G4592, sēmeîon), many witnesses, particularly the religious leaders, had preconceived notions about the Messiah, were unwilling to relinquish their worldly status or power, and preferred their own traditions over the radical truth Jesus presented. John immediately follows John 12:37 by quoting Isaiah 53:1 and Isaiah 6:9-10 in John 12:38-41, indicating that this unbelief was a fulfillment of prophecy, a divine judgment upon those who willfully closed their eyes and ears to God's truth. It underscores that faith is not merely intellectual assent but a spiritual reception of truth that requires a willing and receptive heart.

Does this verse imply that God caused their unbelief, or was it their own choice?

This verse, when read in conjunction with the subsequent verses quoting Isaiah, presents a complex interplay between divine sovereignty and human responsibility. While Isaiah's prophecy (quoted in John 12:39-40) speaks of God hardening hearts or blinding eyes, this is often understood as a judicial act of God in response to persistent, willful rejection. It is not that God arbitrarily prevents belief, but that He confirms the choice of those who have already chosen to resist Him. The emphasis in John 12:37 is on their active choice not to believe ("they believed not"), despite the overwhelming evidence. Therefore, it highlights human culpability while simultaneously acknowledging God's overarching plan that incorporates even human rebellion.

What is the significance of John calling Jesus' "miracles" "signs"?

In John's Gospel, the term "signs" (Greek: sēmeîa) is highly significant. Unlike the Synoptic Gospels which often use terms like "powers" or "wonders," John consistently uses sēmeîon (G4592) to emphasize that Jesus' miraculous acts were not merely displays of power to amaze, but were intentional pointers to His divine identity, nature, and mission. Each "sign" (e.g., turning water into wine, healing the paralytic, feeding the five thousand, raising Lazarus) reveals a deeper spiritual truth about who Jesus is (e.g., the true Vine, the Bread of Life, the Resurrection and the Life). Thus, the tragedy of John 12:37 is that people failed to grasp the profound spiritual meaning behind these physical demonstrations, missing the very revelation God was offering.

Christ-Centered Fulfillment

John 12:37, in its stark portrayal of unbelief despite abundant evidence, paradoxically points to the very heart of Christ's mission and His ultimate fulfillment of God's redemptive plan. The persistent rejection of Jesus, even in the face of His glorious signs, underscores the profound spiritual brokenness of humanity and the absolute necessity of divine grace for salvation. Their unbelief, though tragic, was not unforeseen; it was a fulfillment of ancient prophecies concerning the Messiah's reception, demonstrating God's sovereign hand at work even in human rebellion. This rejection ultimately led Jesus to the cross, which, far from being a defeat, became the greatest "sign" of all—the ultimate demonstration of God's love and justice. Through His death and resurrection, Jesus accomplished what no amount of miracles could compel: He provided the means for humanity to be reconciled to God, offering a new covenant of grace where faith is a gift of the Spirit, not merely a response to empirical proof. Thus, the unbelief highlighted in John 12:37 serves to magnify the radical nature of the Gospel, where salvation comes not through human merit or intellectual assent to signs, but through a Spirit-wrought faith in the crucified and risen Christ, who is the true light of the world (John 8:12) and the Lamb of God who takes away the sin of the world (John 1:29).

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Public-domain commentary

Matthew Henry

From his Commentary on the Whole Bible. Henry comments on passages, not single verses — this entry covers John 12:37–41. His four-level outline is real structure in the source text, so it is rendered as structure.

1662–1714 · 5 verses
Passage under commentJohn 12:37–41
I. II. Main points1. 2. Sub-points(1.) (2.) Details[1.] [2.] Fine details

We have here the honour done to our Lord Jesus by the Old Testament prophets, who foretold and lamented the infidelity of the many that believed not on him. It was indeed a dishonour and grief to Christ that his doctrine met with so little acceptance and so much opposition; but this takes off the wonder and reproach, makes the offence of it to cease, and made it no disappointment to Christ, that herein the scriptures were fulfilled. Two things are here said concerning this untractable people, and both were foretold by the evangelical prophet Isaiah, that they did not believe, and that they could not believe.

I.They did not believe (Joh 12:37):

Though he had done so many miracles before them, which, one would think, should have convinced them, yet they believed not, but opposed him. Observe,

1.The abundance of the means of conviction which Christ afforded them: He did miracles, so many miracles; tosauta sēmeia signifying both so many and so great. This refers to all the miracles he had wrought formerly; nay, the blind and lame now came to him into the temple, and he healed them, Mat 21:14. His miracles were the great proof of his mission, and on the evidence of them he relied. Two things concerning them he here insists upon: - (1.) The number of them; they were many, - various and of divers kinds; numerous and often repeated; and every new miracle confirmed the reality of all that went before. The multitude of his miracles was not only a proof of his unexhausted power, but gave the greater opportunity to examine them; and, if there had been a cheat in them, it was morally impossible but that in some or other of them it would have been discovered; and, being all miracles of mercy, the more there were the more good was done. (2.) The notoriety of them. He wrought these miracles before them, not at a distance, not in a corner, but before many witnesses, appearing to their own eyes.

2.The inefficacy of these means: Yet they believed not on him. They could not gainsay the premises, and yet would not grant the conclusion. Note, The most plentiful and powerful means of conviction will not of themselves work faith in the depraved prejudiced hearts of men. These saw, and yet believed not.

3.The fulfilling of the scripture in this (Joh 12:38): That the saying of Esaias might be fulfilled. Not that these infidel Jews designed the fulfilling of the scripture (they rather fancied those scriptures which speak of the church's best sons to be fulfilled in themselves), but the event exactly answered the prediction, so that (ut for ita ut) this saying of Esaias was fulfilled. The more improbable any event is, the more does a divine foresight appear in the prediction of it. One could not have imagined that the kingdom of the Messiah, supported with such pregnant proofs, should have met with so much opposition among the Jews, and therefore their unbelief is called a marvellous work, and a wonder, Isa 29:14. Christ himself marvelled at it, but it was what Isaiah foretold (Isa 53:1), and now it is accomplished. Observe,

(1.)The gospel is here called their report: Who has believed, tē akon hēmōn - our hearing, which we have heard from God, and which you have heard from us. Our report is the report that we bring, like the report of a matter of fact, or the report of a solemn resolution in the senate.

(2.)It is foretold that a few comparatively of those to whom this report is brought will be persuaded to give credit to it. Many hear it, but few heed it and embrace it: Who hath believed it? Here and there one, but none to speak of; not the wise, not the noble; it is to them but a report which wants confirmation.

(3.)It is spoken of as a thing to be greatly lamented that so few believe the report of the gospel. Lord is here prefixed from the Septuagint, but is not in the Hebrew, and intimates a sorrowful account brought to God by the messengers of the cold entertainment which they and their report had; as the servant came, and showed his lord all these things, Luk 14:21.

(4.)The reason why men believe not the report of the gospel is because the arm of the Lord is not revealed to them, that is, because they do not acquaint themselves with, and submit themselves to, the grace of God; they do not experimentally know the virtue and fellowship of Christ's death and resurrection, in which the arm of the Lord is revealed. They saw Christ's miracles, but did not see the arm of the Lord revealed in them.

II.They could not believe, and therefore they could not because Esaias said, He hath blinded their eyes.

This is a hard saying, who can explain it? We are sure that God is infinitely just and merciful, and therefore we cannot think there is in any such an impotency to good, resulting from the counsels of God, as lays them under a fatal necessity of being evil. God dams none by mere sovereignty; yet it is said, They could not believe. St. Austin, coming in course to the exposition of these words, expresses himself with a holy fear of entering upon an enquiry into this mystery. Justa sunt judicia ejus, sed occulta - His judgments are just, but hidden.

1.They could not believe, that is, they would not; they were obstinately resolved in their infidelity; thus Chrysostom and Austin incline to understand it; and the former gives divers instances of scripture of the putting of an impotency to signify the invincible refusal of the will, as Gen 37:4, They could not speak peaceably to him. And Joh 7:7. This is a moral impotency, like that of one that is accustomed to do evil, Jer 13:23. But,

2.They could not because Esaias had said, He hath blinded their eyes. Here the difficulty increases; it is certain that God is not the author of sin, and yet,

(1.)There is a righteous hand of God sometimes to be acknowledged in the blindness and obstinacy of those who persist in impenitency and unbelief, by which they are justly punished for their former resistance of the divine light and rebellion against the divine law. If God withhold abused grace, and give men over to indulged lusts, - if he permit the evil spirit to do his work on those that resisted the good Spirit, - and if in his providence he lay stumbling-blocks in the way of sinners, which confirm their prejudices, then he blinds their eyes, and hardens their hearts, and these are spiritual judgments, like the giving up of idolatrous Gentiles to vile affections, and degenerate Christians to strong delusions. Observe the method of conversion implied here, and the steps taken in it.

[1.]Sinners are brought to see with their eyes, to discern the reality of divine things and to have some knowledge of them.

[2.]To understand with their heart, to apply these things to themselves; not only to assent and approve, but to consent and accept.

[3.]To be converted, and effectually turned from sin to Christ, from the world and the flesh to God, as their felicity and portion.

[4.]Then God will heal them, will justify and sanctify them; will pardon their sins, which are as bleeding wounds, and mortify their corruptions, which are as lurking diseases. Now when God denies his grace nothing of this is done; the alienation of the mind fRom. and its aversion to, God and the divine life, grow into a rooted and invincible antipathy, and so the case becomes desperate.

(2.)Judicial blindness and hardness are in the word of God threatened against those who wilfully persist in wickedness, and were particularly foretold concerning the Jewish church and nation. Known unto God are all his works, and all ours too. Christ knew before who would betray him, and spoke of it, Joh 6:70. This is a confirmation of the truth of scripture prophecies, and thus even the unbelief of the Jews may help to strengthen our faith. It is also intended for caution to particular persons, to beware lest that come upon them which was spoken of in the prophets, Act 13:40.

(3.)What God has foretold will certainly come to pass, and so, by a necessary consequence, in order of arguing, it might be said that therefore they could not believe, because God by the prophets had foretold they would not; for such is the knowledge of God that he cannot be deceived in what he foresees, and such his truth that he cannot deceive in what he foretels, so that the scripture cannot be broken. Yet be it observed that the prophecy did not name particular persons; so that it might not be said, "Therefore such a one and such a one could not believe, because Esaias had said so and so;" but it pointed at the body of the Jewish nation, which would persist in their infidelity till their cities were wasted without inhabitants, as it follows (Isa 6:11, Isa 6:12); yet still reserving a remnant (Isa 6:13, in it shall be a tenth), which reserve was sufficient to keep a door of hope open to particular persons; for each one might say, Why may not I be of that remnant?

Lastly, The evangelist, having quoted the prophecy, shows (Joh 12:41) that it was intended to look further than the prophet's own days, and that its principal reference was to the days of the Messiah: These things said Esaias when he saw his glory, and spoke of him. 1. We read in the prophecy that this was said to Esaias, Isa 6:8, Isa 6:9. But here we are told that it was said by him to the purpose. For nothing was said by him as a prophet which was not first said to him; nor was any thing said to him which was not afterwards said by him to those to whom he was sent. See Isa 21:10. 2. The vision which the prophet there had of the glory of God is here said to be his seeing the glory of Jesus Christ: He saw his glory. Jesus Christ therefore is equal in power and glory with the Father, and his praises are equally celebrated. Christ had a glory before the foundation of the world, and Esaias saw this. 3. It is said that the prophet there spoke of him. It seems to have been spoken of the prophet himself (for to him the commission and instructions were there given), and yet it is here said to be spoken of Christ, for as all the prophets testified of him so they all typified him. This they spoke of him, that as to many his coming would be not only fruitless, but fatal, a savour of death unto death. It might be objected against his doctrine, If it was from heaven, why did not the Jews believe it? But this is an answer to it; it was not for want of evidence, but because their heart was made fat, and their ears were heavy. It was spoken of Christ, that he should be glorified in the ruin of an unbelieving multitude, as well as in the salvation of a distinguished remnant.

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Historical interpretation

Eight Centuries of Reception

6 surviving comments on this verse. Each one is dated, so this reads as a timeline rather than a list.

6 quotes · AD 339–1107
Ante-NicenePost-NiceneEarly MedievalMedieval
30040050060070080090010001100

Select a marker to jump to its quote. Markers stagger vertically where authors wrote within a few decades of each other.

AD 339Eusebius of CaesareaPost-NiceneSourcePROOF OF THE GOSPEL 7.1
Here he expressly foretells the opposition of the Jews to him and how they will see him and not understand who he is. He foretells how they will hear him speaking and teaching them but will be quite unable to grasp who it is that speaks with them or the new teaching he offers them. And John the Evangelist witnesses to the fulfillment of these words referring to our Savior where he says, “Though he had done so many signs before them, yet they believed not on him, that Isaiah the prophet’s words might be fulfilled which he spoke, ‘Lord, who has believed our report, and to whom has the arm of the Lord been revealed?’ Therefore they were not able to believe, because again Isaiah said, ‘He has blinded their eyes and hardened their heart, so that they should not see with their eyes, and understand with their heart and be converted, and I should heal them.’ Isaiah said these things when he saw his glory and bore witness of him.” Thus the Evangelist most certainly referred the theophany in Isaiah to Christ and to the Jews who did not receive the Lord that was seen by the prophet, according to the prediction about him.
AD 407John Chrysostomas quoted by Aquinas, AD 1274Post-NiceneSourceCatena Aurea by Aquinas
(Hom. lxviii. 1) And thus the Evangelist tacitly explains it, when he adds, But though He had done so many miracles before them, yet they believed not on Him.

(Hom. lxviii. 2) But why then did Christ come? Did He not know that they would not believe in Him? Yes: the Prophets had prohibited this very unbelief, and He came that it might be made manifest, to their confusion and condemnation; That the saying of Esaias the prophet might be fulfilled, which He spake, Lord, who hath believed our report? and to whom hath the arm of the Lord been revealed?

(Hom. lxviii. 2) That the saying of Esaias might be fulfilled: that here is expressive not of the cause, but of the event. They did not disbelieve because Esaias said they would; but because they would disbelieve, Esaias said they would.

(Hom. lxviii. 2) This is a common form of speech among ourselves. I cannot love such a man, meaning by this necessity only a vehement will. The Evangelist says could not, to show that it was impossible that the Prophet should lie, not that it was impossible that they should believe.

(Hom. lxviii) For He does not leave us, except we wish Him, as He saith in Hosea, Seeing thou hast forgotten the law of thy God, I will also forget thy children. (Hos. 4:6) Whereby it is plain that we begin to forsake first, and are the cause of our own perdition. For as it is not the fault of the sun, that it hurts weak eyes, so neither is God to blame for punishing those who do not attend to His words.

(Hom. lxviii. 2) His glory means the vision of Him sitting on His lofty throne: I saw the Lord sitting upon a throne. Also I heard the voice of the Lord, saying, Whom shall I send, and who will go for us? (Is. 6:1)
"But though He had done so many miracles before them, yet they believed not on Him: that the saying of Isaiah the prophet might be fulfilled, which he spake, Lord, who hath believed our report and to whom hath the arm of the Lord been revealed?" Where he makes it sufficiently plain that the Son of God is Himself the arm of the Lord; not that the person of God the Father is determined by the shape of human flesh, and that the Son is attached to Him as a member of His body; but because all things were made by Him, and therefore He is designated the arm of the Lord. For as it is with thine arm that thou workest, so the Word of God is styled His arm; because by the Word He elaborated the world. For why does a man, in order to do some work, stretch forth his arm, but because the doing of it does not straightway follow his word? And if he was endowed with such pre-eminent power that what he said was done without any movement of his body, then would his word be his arm. But the Lord Jesus, the only-begotten Son of God the Father, as He is no mere member of the Father's body, so is He no mere thinkable, and audible, and transitory word; for, as all things were made by Him, He was the word of God.

When, therefore, we hear that the Son of God is the arm of God the Father, let no carnal custom raise its distracting din in our ears; but as far as His grace enables us, let us think of that power and wisdom of God by which all things were made. Surely such an arm as that is neither held out by stretching, nor drawn in by contracting it. For He is not one and the same with the Father, but He and the Father are one; and as equal with the Father, He is in all respects complete, as well as the Father: so that no room is left open for the abominable error of those who assert that the Father alone exists, but according to the difference of causes is Himself sometimes called the Son, sometimes the Holy Spirit.

There are some, then, who mutter among themselves, and sometimes speak out when they can, and even break forth into turbulent debate, saying: What did the Jews do, or what fault was it of theirs, if it was a necessity "that the saying of Isaiah the prophet should be fulfilled, which he spake, Lord, who hath believed our report and to whom hath the arm of the Lord been revealed?" To whom our answer is, that the Lord, in His foreknowledge of the future, foretold by the prophet the unbelief of the Jews; He foretold it, but did not cause it. For God does not compel any one to sin simply because He knows already the future sins of men. For He foreknew sins that were theirs, not His own; sins that were referable to no one else, but to their own selves. Accordingly, if what He foreknew as theirs is not really theirs, then had He no true foreknowledge: but as His foreknowledge is infallible, it is doubtless no one else, but they themselves, whose sinfulness God foreknew, that are the sinners. The Jews, therefore, committed sin, with no compulsion to do so on His part, to whom sin is an object of displeasure; but He foretold their committing of it, because nothing is concealed from His knowledge. And accordingly, had they wished to do good instead of evil, they would not have been hindered; but in this which they were to do they were foreseen of Him who knows what every man will do, and what He is yet to render unto such an one according to his work.

But the words of the Gospel also, that follow, are still more pressing, and start a question of more profound import: for He goes on to say, "Therefore they could not believe, because that Isaiah said again, He hath blinded their eyes, and hardened their heart; that they should not see with their eyes, nor understand with their heart, and be converted, and I should heal them." For it is said to us: If they could not believe, what sin is it in man not to do what he cannot do and if they sinned in not believing, then they had the power to believe, and did not use it. If, then, they had the power, how says the Gospel, "Therefore they could not believe, because that Isaiah said again, He hath blinded their eyes, and hardened their heart;" so that (which is of grave import) to God Himself is referred the cause of their not believing, inasmuch as it is He who "hath blinded their eyes, and hardened their heart"?

"They could not believe," because that Isaiah the prophet foretold it; and the prophet foretold it because God foreknew that such would be the case. But if I am asked why they could not, I reply at once, because they would not; for certainly their depraved will was foreseen by God, and foretold through the prophet by Him from whom nothing that is future can be hid. But the prophet, sayest thou, assigns another cause than that of their will. What cause does the prophet assign? That "God hath given them the spirit of remorse, eyes that they should not see, and ears that they should not hear; and hath blinded their eyes, and hardened their heart." This also, I reply, their will deserved. For God thus blinds and hardens, simply by letting alone and withdrawing His aid: and God can do this by a judgment that is hidden, although not by one that is unrighteous. This is a doctrine which the piety of the God-fearing ought to preserve unshaken and inviolable in all its integrity: even as the apostle, when treating of the same intricate question, says, "What shall we say then? is there unrighteousness with God? God forbid." If, then, we must be far from thinking that there is unrighteousness with God, this only can it be, that, when He giveth His aid, He acteth mercifully; and, when He withholdeth it, He acteth righteously: for in all He doeth, He acteth not rashly, but in accordance with judgment.

"These things said Isaiah, when he saw His glory, and spake of Him." What Isaiah saw, and how it refers to Christ the Lord, are to be read and learned in his book. For he saw Him, not as He is, but in some symbolical way to suit the form that the vision of the prophet had itself to assume. For Moses likewise saw Him, and yet we find him saying to Him whom he saw, "If I have found grace in Thy sight, show me now Thyself, that I may clearly see Thee;" for he saw Him not as He is. But the time when this shall yet be our experience, that same Saint John the Evangelist tells us in his Epistle: "Dearly beloved, [now] are we the sons of God; and it hath not yet become manifest what we shall be: because we know that, when He shall appear, we shall be like Him; for we shall see Him as He is." And be not deceived, brethren, by any of those who assert that the Father is invisible, and the Son visible. This assertion is made by those who think that the latter is a creature, and whose understanding runs not in harmony with the words, "I and my Father one." Accordingly, as respects the form of God wherein He is equal with the Father, the Son also is invisible: but, in order to be seen of men, He assumed the form of a servant, and being made in the likeness of men, became visible to man. He showed Himself, therefore, even before His incarnation, to the eyes of men, as it pleased Him, in the creature-form at His command, but not as He is. Let us be purifying our hearts by faith, that we may be prepared for that ineffable and, so to speak, invisible vision. For "blessed are the pure in heart; for they shall see God."
AD 430Augustine of Hippoas quoted by Aquinas, AD 1274Post-NiceneSourceCatena Aurea by Aquinas
(Tr. liii. 2) It is evident here that the arm of the Lord is the Son of God Himself. Not that the Father has a human fleshly form; He is called the arm of the Lord, because all things were made by Him. If a man had power of such a kind, as that without any motion of his body, what he said was forthwith done, the word of that man would be his arm. Here is no ground to justify, however, the error of those who say that the Godhead is one Person only, because the Son is the arm of the Father, and a man and his arm are not two persons, but one. These men do not understand, that the commonest things require to be explained often by applying language to them taken from other things in which there happens to be a likeness, [cand that, when we are upon things incomprehensible, and which cannot be described as they actually are, this is much more necessary. Thus one man calls another man, whom he makes great use of, his arm; and talks of having lost his arm, of having his arm taken away from him.] But some mutter, and ask, What fault was it of the Jews, if it was necessary that the sayings of Esaias should be fulfilled? We answer, that God, foreseeing the future, predicted by the Prophet the unbelief of the Jews, but did not cause it. God does not compel men to sin, because He knows they will sin. He foreknows their sins, not His own. The Jews committed the sin, which He who knows all things foretold they would commit.

(Tr. liii. 5) But what follows involved a deeper question: Therefore they could not believe, because that Esaias said again, He hath blinded their eyes, and hardened their hearts, that they should not see with their eyes, nor understand with their heart, and be converted, and I should heal them. That they should not believe; but if so, what sin is there in a man doing what he cannot help doing? And what is a graver point still, the cause is assigned to God; since He it is who blinded their eyes, and hardened their heart. This is not said to be the devil's doing, but God's. Yet if any ask why they could not believe, I answer, Because they would not. For as it is to the praise of the Divine will that God cannot deny Himself, so is it the fault of the human will that they could not believe.

(Tr. liii. 5) But the Prophet, you say, mentions another cause, not their will; viz. that God had blinded their eyes, and hardened their heart. But I answer, that they well deserved this. For God hardens and blinds a man, by forsaking and not supporting him; and this He may by a secret sentence, by an unjust one He cannot.

(Tr. liii. 11) And be converted, and I should heal them. Is not to be understood here, from the beginning of the sentence—that they should not see with their eyes, nor understand with their hearts, nor be converted; conversion being the free gift of God? ord, shall we suppose that a heavenly remedy is meant; whereby those who wished to establish their own righteousness, were so far deserted and blinded, as to stumble on the stumbling stone, till, with confusion of face, they humbled themselves, and sought not their own righteousness which puffeth up the proud, but God's righteousness, which justifieth the ungodly. For many of those who put Christ to death, were afterward troubled with a sense of their guilt; which led to their believing in Him. (c. 12). These things said Esaias, when he saw His glory, and spake of Him. He saw Him not really, but figuratively, in prophetic vision. Be not deceived by those who say that the Father is invisible, the Son visible, making the Son a creature. For in the form of God, in which He is equal to the Father, the Son also is invisible; though He took upon Him the form of a servant, that He might be seen by men. Before His incarnation too, He made Himself visible at times to human eyes; but visible through the medium of created matter, not visible as He is.
Source: Quotations drawn from early Church Fathers and historical Christian theologians (AD 100–1500). Some quotes address the surrounding passage context rather than this verse alone.
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