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Commentary on 1 John 5 verses 18–21
18 ¶ We know that whosoever is born of God sinneth not; but he that is begotten of God keepeth himself, and that wicked one toucheth him not.
19 And we know that we are of God, and the whole world lieth in wickedness.
20 And we know that the Son of God is come, and hath given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.
21 Little children, keep yourselves from idols. Amen.
Here we have,
I. A recapitulation of the privileges and advantages of sound Christian believers. 1. They are secured against sin, against the fulness of its dominion or the fulness of its guilt: We know that whosoever is born of God (and the believer in Christ is born of God, Jo1 5:1) sinneth not (Jo1 5:18), sinneth not with that fulness of heart and spirit that the unregenerate do (as was said Jo1 3:6, Jo1 3:9), and consequently not with that fulness of guilt that attends the sins of others; and so he is secured against that sin which is unavoidably unto death, or which infallibly binds the sinner over unto the wages of eternal death; the new nature, and the inhabitation of the divine Spirit thereby, prevent the admission of such unpardonable sin. 2. They are fortified against the devil's destructive attempts: He that is begotten of God keepeth himself, that is, is enabled to guard himself, and the wicked one toucheth him not (Jo1 5:18), that is, that the wicked one may not touch him, namely, to death. It seems not to be barely a narration of the duty or the practice of the regenerate; but an indication of their power by virtue of their regeneration. They are thereby prepared and principled against the fatal touches, the sting, of the wicked one; he touches not their souls, to infuse his venom there a he does in others, or to expel that regenerative principle which is an antidote to his poison, or to induce them to that sin which by the gospel constitution conveys an indissoluble obligation to eternal death. He may prevail too far with them, to draw them to some acts of sin; but it seems to be the design of the apostle to assert that their regeneration secures them from such assaults of the devil as will bring them into the same case and actual condemnation with the devil. 3. they are on God's side and interest, in opposition to the state of the world: And we know that we are of God, and the whole world lieth in wickedness, Jo1 5:19. Mankind are divided into two great parties of dominions, that which belongs to God and that which belongs to wickedness or to the wicked one. The Christian believers belong to God. They are of God, and from him, and to him, and for him. They succeed into the right and room of the ancient Israel of God, of whom it is said, The Lord's people is his portion, his estate in this world; Jacob is the lot of his inheritance, the dividend that has fallen to him by the lot of his own determination (Deu 32:9); while, on the contrary, the whole world, the rest, being by far the major part, lieth in wickedness, in the jaws in the bowels of the wicked one. There are, indeed, were we to consider the individuals, many wicked ones, many wicked spirits, in the heavenly or the ethereal places; but they are united in wicked nature, policy, and principle, and they are united also in one head. there is the prince of the devils and of the diabolical kingdom. There is a head of the malignity and of the malignant world; and he has such sway here that he is called the god of this world. Strange that such a knowing spirit should be so implacably incensed against the Almighty and all his interests, when he cannot but know that it must end in his own overthrow and everlasting damnation! How tremendous is the judgment of God upon that wicked one! May the God of the Christian world continually demolish his dominion in this world, and translate souls into the kingdom of his dear Son! 4. They are enlightened in the knowledge of the true eternal God: "And we know that the Son of God has come, and has given as an understanding, that we may know him that is true, Jo1 5:20. The Son of God has come into our world, and we have seen him, and know him by all the evidence that has already been asserted; he has revealed unto us the true God (as Joh 1:18), and he has opened our minds too to understand that revelation, given us an internal light in our understandings, whereby we may discern the glories of the true God; and we are assured that it is the true God that he hath discovered to us. He is infinitely superior in purity, power, and perfection, to all the gods of the Gentiles. He has all the excellences, beauties, and riches, of the living and true God. It is the same God that, according to Moses's account, made the heavens and the earth, the same who took our fathers and patriarchs into peculiar covenant with himself, the same who brought our ancestors out of Egypt, who gave us the fiery law upon mount Sinai, who gave us his holy oracles, promised the call and conversion of the Gentiles. By his counsels and works, by his love and grace, by his terrors and judgments, we know that he, and he alone, in the fulness of his being, is the living and true God." It is a great happiness to know the true God, to know him in Christ; it is eternal lie, Joh 17:3. It is the glory of the Christian revelation that it gives the best account of the true God, and administers the best eye-salve for our discerning the living and true God. 5. They have a happy union with God and his Son: "And we are in him that is true, even (or and) in his Son Jesus Christ, Jo1 5:20. The Son leads us to the Father, and we are in both, in the love and favour of both, in covenant and federal alliance with both, in spiritual conjunction with both by the inhabitation and operation of their Spirit: and, that you may know how great a dignity and felicity this is, you must remember that this true one is the true God and eternal life" or rather (as it should seem a more natural construction), "This same Son of God is himself also the true God and eternal life" (Joh 1:1, and here, Jo1 1:2), "so that in union with either, much more with both, we are united to the true God and eternal life." Then we have,
II. The apostle's concluding monition: "Little children" (dear children, as it has been interpreted), "keep yourselves from idols, Jo1 5:21. Since you know the true God, and are in him, let your light and love guard you against all that is advanced in opposition to him, or competition with him. Flee from the false gods of the heathen world. They are not comparable to the God whose you are and whom you serve. Adore not your God by statues and images, which share in his worship. Your God is an incomprehensible Spirit, and is disgraced by such sordid representations. Hold no communion with your heathen neighbours in their idolatrous worship. Your God is jealous, and would have you come out, and be separated from among them; mortify the flesh, and be crucified to the world, that they may not usurp the throne of dominion in the heart, which is due only to God. The God whom you have known is he who made you, who redeemed you by his Son, who has sent his gospel to you, who has pardoned your sins, begotten you unto himself by his Spirit, and given you eternal life. Cleave to him in faith, and love, and constant obedience, in opposition to all things that would alienate your mind and heart from God. To this living and true God be glory and dominion for ever and ever. Amen."
Matthew Henry (1662–1714) — Commentary on the Whole Bible. This section covers verses 18–21. Public domain.
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TertullianAD 220
ON THE CROWN 5.10
John did not tell us to keep away from worship, but from idols, that is, from their very likeness. For it is wrong for you, who are created in the image of the living God, to become the image of an idol and a dead man.
TertullianAD 220
De Corona
Even an earthly serpent sucks in men at some distance with its breath. Going still further, John says, "My little children, keep yourselves from idols," -not now from idolatry, as if from the service of it, but from idols-that is, from any resemblance to them: for it is an unworthy thing that you, the image of the living God, should become the likeness of an idol and a dead man.
Didymus the BlindAD 398
CATENA
Why is it that after everything else which he has said to his hearers during the course of his letter, John should keep this warning about idols to the very end? In my opinion it is because here he is addressing the church in general. There must have been many in that assembly who were former idolaters, and he adds this caution for their benefit.
Hilary of ArlesAD 449
INTRODUCTORY COMMENTARY ON 1 JOHN
The letter ends as it began, with an admonition to worship the one true God alone. Everything else that John says is contained in this one golden rule.
BedeAD 735
Commentary on the Catholic Epistles
Little children, keep yourselves from idols. You who have known the true God, in whom you have eternal life, keep yourselves from the doctrines of heretics, which lead to eternal death, because, like those who make idols in place of God, they change the glory of the incorruptible God into the likeness of corruptible things with perverse teachings (Rom. I). Keep yourselves from love of money, which is the service of idols. Be careful not to prefer any worldly allurements over the love of the Creator. For this too will be counted among idols, so that having the care and diligence for truth alone, you may deserve to rejoice endlessly in its vision. For the world passes away, and its desire. But whoever does the will of the Lord remains forever (1 John II).
OecumeniusAD 990
Commentary on 1 John
We know that whoever is born of God does not sin, but he who has been born of God guards (τηρεῖ) himself, and the wicked one does not touch him. We know that we are of God, and the whole world lies under the sway of the wicked one. And we know that the Son of God has come and has given us an understanding, that we may know Him who is true; and we are in Him who is true, in His Son Jesus Christ. This is the true God and eternal life. Little children, keep yourselves from idols. Amen.
Having declared this, he subsequently indicates whose sin is the sin leads to death; and he says that whoever is born of God does not sin. For when he has once entrusted himself to the one dwelling in him through adoption in Christ, he remains inaccessible to sin. However, lest anyone think that such a nature has been completely changed, so that he can no longer be seized by sin, he adds:
"He guards himself," as if to say: Unless he were to keep and guard himself from the evil one, he would certainly sin. Therefore, it is not nature that leads to perfection, but rather the glory of God, who, because He has adopted us, has deemed us worthy of such grace: that by keeping and guarding what has been given to us by Him, we may also have it, so that we do not sin. For unless it were so, since the world is established in evil (and the world refers to those who have not committed themselves to God through good works), nothing would prevent us from being examined along with those who perish: because the mind of man is continually inclined to evil from early youth, as God revealed during the time of the flood. (Gen. 8:22) But since, John says, the Son of God has come and has given us an understanding by which we may know the true God through internal understanding, and be in His true Son Jesus Christ: we have come to know through this glory that He is the true God and eternal life, and by knowing we are safe from the onslaught of evil and its offenses. "This is the true God." This, also, serves as a demonstrative article. Here, the article indicates relationship. "keep yourself from idols." Some have questioned: If John writes this to the perfect, why does he now command them to beware of idols? We therefore say that because he wrote to the whole Church, which was not made up of a select people, but there were also some among them who were less affected. Therefore, he commands all these, looking at their slippery nature.
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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SUMMARY
The apostle John concludes his first epistle with a succinct yet profound admonition, urging his "little children" to "keep yourselves from idols." This final command serves as a vital summation of the letter's overarching themes of truth, love, and light, emphasizing the critical importance of singular devotion to God in Christ and guarding against anything that might usurp His rightful place in the believer's heart and life. It is a pastoral warning against any form of misplaced allegiance that could compromise their relationship with the living God.
CONTEXT
Literary Context: This verse stands as the climactic and concluding statement of 1 John. The epistle has systematically built a case for the assurance of salvation through faith in Jesus Christ, emphasizing the dual proofs of genuine faith: righteous living (walking in light, obeying God's commands) and loving one another. John has just affirmed the certainty of eternal life for those who believe in the Son of God (1 John 5:13), the power of prayer according to God's will (1 John 5:14-15), and the distinct nature of those born of God versus the world (1 John 5:18-19). He has also asserted the reality of Jesus Christ as the true God and eternal life (1 John 5:20). Against this backdrop of theological certainty and spiritual privilege, the abrupt warning against idols serves as a sharp, practical imperative, ensuring that the readers' newfound assurance and knowledge of God do not lead to complacency or compromise. It is a final, protective word from a loving spiritual father.
Historical & Cultural Context: First John was likely written in the late first century, possibly from Ephesus, to a community of believers facing internal and external pressures. Internally, the church was grappling with false teachers, often identified as proto-Gnostics, who denied the full humanity of Christ (docetism) and promoted a form of spiritual elitism, claiming special knowledge (gnosis) that bypassed ethical living. Externally, believers lived in a Roman world saturated with pagan polytheism, emperor worship, and various mystery cults. While literal idol worship (bowing to statues of gods) was a constant temptation and societal norm, John's warning likely extends beyond physical images to encompass the more subtle "idols" of the mind and heart: false doctrines, worldly philosophies, self-reliance, or anything that subtly replaces or diminishes the unique supremacy of Jesus Christ. The term "idols" would have resonated with both the overt pagan practices and the insidious spiritual dangers posed by the emerging heresies.
Key Themes: This concluding verse powerfully reinforces several key themes woven throughout 1 John. The overarching theme of truth versus falsehood is evident, as idolatry represents a deviation from the true God revealed in Jesus Christ. John has repeatedly contrasted the light with darkness, truth with lies, and those who are "of God" with "the world" (1 John 1:5-6, 1 John 2:21-23, 1 John 4:1-6). The warning against idols underscores the theme of singular devotion and loyalty to God, echoing the Old Testament's first commandment (Exodus 20:3) and the call for exclusive worship. Furthermore, the command to "keep yourselves" highlights the theme of personal responsibility and vigilance in maintaining purity and faith. It implies an active guarding of one's heart and mind against spiritual compromise, a concept also seen in the call to abide in Christ and to walk as He walked.
EXPOSITION AND ANALYSIS
Key Word Analysis
Verse Breakdown
Literary Devices
The verse employs several potent literary devices. The most prominent is Imperative Mood, seen in "keep yourselves," which conveys a direct, urgent command, leaving no room for ambiguity about the action required. The use of the Diminutive "little children" (teknía) creates a tone of Pathos and Pastoral Tenderness, softening the command with affection and highlighting the vulnerability of the recipients. This contrasts with the gravity of the warning, making it more impactful. The verse also functions as a powerful Summary Statement or Coda, concisely encapsulating the epistle's emphasis on singular devotion to the true God and providing a final, practical application. The abruptness of the warning, following profound theological declarations, creates a sense of Urgency and finality. Finally, the concluding "Amen" acts as a Solemn Affirmation, lending divine authority and weight to the entire message, effectively sealing the epistle with a declaration of truth and certainty.
THEOLOGICAL AND THEMATIC CONNECTIONS
The command to "keep yourselves from idols" is a foundational theological principle rooted in the very nature of God as unique and sovereign. It reflects the consistent biblical demand for exclusive worship and singular devotion to the one true God, a theme that runs from the Old Testament's first commandment through the New Testament's call to undivided loyalty to Christ. Idolatry, in its essence, is a misdirection of the heart's ultimate allegiance, trust, and worship—qualities due only to God. Whether it's a physical image, a false doctrine, a worldly philosophy, or even a personal ambition, anything that usurps God's supreme place in our lives becomes an idol. John's warning serves as a timeless reminder that spiritual purity and true fellowship with God necessitate a constant vigilance against all competing allegiances, ensuring that our hearts remain wholly devoted to Him who is "the true God, and eternal life" (1 John 5:20).
REFLECTION AND APPLICATION
John's final word is not merely an ancient warning against pagan statues but a timeless call to radical, undivided devotion to God. In our contemporary world, "idols" rarely manifest as physical images, but they are no less insidious. They can be anything that claims the ultimate affection, trust, or allegiance of our hearts apart from God: careers, money, relationships, technology, entertainment, self-image, political ideologies, or even religious practices that become ends in themselves rather than means to a deeper relationship with Christ. This verse compels us to a profound self-examination: what do we truly worship? What consumes our thoughts, drives our ambitions, and dictates our priorities? A pure heart for God requires constant vigilance, repentance, and a deliberate re-centering of our lives on Jesus Christ. It's a call to actively dismantle anything that competes for His rightful place on the throne of our lives, ensuring that our love, trust, and obedience are singularly directed toward Him. This final "Amen" serves as a powerful seal on the epistle, affirming the absolute necessity of maintaining a pure and uncompromised faith.
Questions for Reflection
FAQ
What does John mean by "idols" in a New Testament context, especially at the end of his letter?
Answer: While "idols" (eídōlon) in the ancient world primarily referred to physical images of pagan gods and the worship associated with them, John's use here, particularly as a concluding warning, extends beyond mere physical objects. Given the epistle's context of combating false teaching (proto-Gnosticism) and emphasizing the true nature of God revealed in Jesus Christ (1 John 5:20), "idols" likely encompasses anything that replaces or competes with the true God for ultimate allegiance, trust, and worship. This includes false doctrines, worldly philosophies, human wisdom that denies Christ, materialism, self-reliance, or anything that becomes the supreme object of one's affections or source of security. It's a warning against any form of misplaced devotion that would draw believers away from their singular commitment to Jesus Christ and the Father.
Why is this warning placed as the very last verse of the epistle?
Answer: The placement of this warning as the final verse is highly significant and intentional. It serves as a climactic, urgent, and summarizing imperative. After extensively teaching about the nature of God (light, love), the person of Christ, the assurance of salvation, and the importance of ethical living and brotherly love, John concludes with a practical, protective command. It underscores that all the theological truths and spiritual assurances he has provided are ultimately meaningless if the believer's heart is divided or if anything else usurps God's rightful place. It's a final, tender call from a spiritual father to his "little children" to safeguard their most precious possession: their relationship with the true God through Jesus Christ. It functions as a final, memorable exhortation to maintain spiritual purity and undivided loyalty.
CHRIST-CENTERED FULFILLMENT
The command to "keep yourselves from idols" finds its ultimate fulfillment and enablement in Jesus Christ. In the Old Testament, the prohibition against idolatry was a constant struggle for Israel, who repeatedly turned to other gods, demonstrating humanity's inherent tendency to worship creation rather than the Creator (Romans 1:25). Jesus Christ, however, perfectly embodied singular devotion to the Father, declaring, "I and my Father are one" (John 10:30) and always doing the Father's will (John 6:38). He is the "true God, and eternal life" (1 John 5:20), meaning that true worship and life are found exclusively in Him. For believers, keeping themselves from idols is not merely a legalistic adherence to a command, but a natural outflow of their new identity in Christ. Through the indwelling Holy Spirit, who enables us to live according to God's will (Romans 8:4), we are empowered to turn from anything that would compete with Christ for our affection. Our singular devotion to Jesus, who is the image of the invisible God (Colossians 1:15), is the ultimate antidote to idolatry, as He alone satisfies the deepest longings of the human heart and provides the true life that no idol can offer.