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Commentary on Galatians 4 verses 21–31
In these verses the apostle illustrates the difference between believers who rested in Christ only and those judaizers who trusted in the law, by a comparison taken from the story of Isaac and Ishmael. This he introduces in such a manner as was proper to strike and impress their minds, and to convince them of their great weakness in departing from the truth, and suffering themselves to be deprived of the liberty of the gospel: Tell me, says he, you that desire to be under the law, do you not hear the law? He takes it for granted that they did hear the law, for among the Jews it was wont to be read in their public assemblies every sabbath day; and, since they were so very fond of being under it, he would have them duly to consider what is written therein (referring to what is recorded Gen. 16 and 21), for, if they would do this, they might soon see how little reason they had to trust in it. And here, 1. He sets before them the history itself (Gal 4:22, Gal 4:23): For it is written, Abraham had two sons, etc. Here he represents the different state and condition of these two sons of Abraham - that the one, Ishmael, was by a bond-maid, and the other, Isaac, by a free-woman; and that whereas the former was born after the flesh, or by the ordinary course of nature, the other was by promise, when in the course of nature there was no reason to expect that Sarah should have a son. 2. He acquaints them with the meaning and design of this history, or the use which he intended to make of it (Gal 4:24-27): These things, says he, are an allegory, wherein, besides the literal and historical sense of the words, the Spirit of God might design to signify something further to us, and that was, That these two, Agar and Sarah, are the two covenants, or were intended to typify and prefigure the two different dispensations of the covenant. The former, Agar, represented that which was given from mount Sinai, and which gendereth to bondage, which, though it was a dispensation of grace, yet, in comparison of the gospel state, was a dispensation of bondage, and became more so to the Jews, through their mistake of the design of it, and expecting to be justified by the works of it. For this Agar is mount Sinai in Arabia (mount Sinai was then called Agar by the Arabians), and it answereth to Jerusalem which now is, and is in bondage with her children; that is, it justly represents the present state of the Jews, who, continuing in their infidelity and adhering to that covenant, are still in bondage with their children. But the other, Sarah, was intended to prefigure Jerusalem which is above, or the state of Christians under the new and better dispensation of the covenant, which is free both from the curse of the moral and the bondage of the ceremonial law, and is the mother of us all - a state into which all, both Jews and Gentiles, are admitted, upon their believing in Christ. And to this greater freedom and enlargement of the church under the gospel dispensation, which was typified by Sarah the mother of the promised seed, the apostle refers that of the prophet, Isa 54:1, where it is written, Rejoice, thou barren that bearest not; break forth and cry, thou that travailest not; for the desolate hath many more children than she who hath a husband. 3. He applies the history thus explained to the present case (Gal 4:28); Now we, brethren, says he, as Isaac was, are the children of the promise. We Christians, who have accepted Christ, and rely upon him, and look for justification and salvation by him alone, as hereby we become the spiritual, though we are not the natural, seed of Abraham, so we are entitled to the promised inheritance and interested in the blessings of it. But lest these Christians should be stumbled at the opposition they might meet with from the Jews, who were so tenacious of their law as to be ready to persecute those who would not submit to it, he tells them that this was no more than what was pointed to in the type; for as then he that was born after the flesh persecuted him that was born after the Spirit, they must expect it would be so now. But, for their comfort in this case, he desires them to consider what the scripture saith (Gen 21:10), Cast out the bond-woman and her son, for the son of the bond-woman shall not be heir with the son of the free-woman. Though the judaizers should persecute and hate them, yet the issue would be that Judaism would sink, and wither, and perish; but true Christianity should flourish and last for ever. And then, as a general inference from the whole of the sum of what he had said, he concludes (Gal 4:31), So then, brethren, we are not children of the bond-woman, but of the free.
"For (it is written) that Abraham had two sons, the one by a bond maid, the other by a free woman; but he who was of the bond maid was born after the flesh, but he of the free woman was by promise: which things are allegorized" (that is to say, they presaged something besides the literal history); "for these are the two covenants," or the two exhibitions (of the divine plans), as we have found the word interpreted," the one from the Mount Sinai," in relation to the synagogue of the Jews, according to the law, "which gendereth to bondage"-"the other gendereth" (to liberty, being raised) above all principality, and power, and dominion, and every name that is l named, not only in this world, but in that which is to come, "which is the mother of us all," in which we have the promise of (Christ's) holy church; by reason of which he adds in conclusion: "So then, brethren, we are not children of the bond woman, but of the free." In this passage he has undoubtedly shown that Christianity had a noble birth, being sprung, as the mystery of the allegory indicates, from that son of Abraham who was born of the free woman; whereas from the son of the bond maid came the legal bondage of Judaism.
Images prophesy: statutes govern. What that digamy of Abraham portends, the same apostle fully teaches, the interpreter of each testament, just as he likewise lays it down that our "seed" is called in Isaac.
Nay, verily, the Holy Spirit is not given by measure, but is poured out altogether on the believer. For if the day rises alike to all, and if the sun is diffused with like and equal light over all, how much more does Christ, who is the true sun and the true day, bestow in His Church the light of eternal life with the like equality! Of which equality we see the sacrament celebrated in Exodus, when the manna flowed down from heaven, and, prefiguring the things to come, showed forth the nourishment of the heavenly bread and the food of the coming Christ. For there, without distinction either of sex or of age, an omer was collected equally by each one. Whence it appeared that the mercy of Christ, and the heavenly grace that would subsequently follow, was equally divided among all; without difference of sex, without distinction of years, without accepting of persons, upon all the people of God the gift of spiritual grace was shed. Assuredly the same spiritual grace which is equally received in baptism by believers, is subsequently either increased or diminished in our conversation and conduct; as in the Gospel the Lord's seed is equally sown, but, according to the variety of the soil, some is wasted, and some is increased into a large variety of plenty, with an exuberant fruit of either thirty or sixty or a hundred fold. But, once more, when each was called to receive a penny, wherefore should what is distributed equally by God be diminished by human interpretation?
He says rightly, "ye that desire," for the matter was not one of a proper and orderly succession of things but of their own unseasonable contentiousness. It is the Book of Creation which he here calls the Law, which name he often gives to the whole Old Testament.
One should note that the whole narrative in Genesis is here called Law, not, according to the popular assumption, simply statements of what is to be done or avoided but everything that is rehearsed concerning Abraham and his wives and sons.
(Verse 21) Tell me, those of you who desire to be under the Law, have you not heard the Law? It should be noted that the Law mentioned here refers to the history of Genesis, not as people commonly think, what should be done or avoided, but rather the entire narrative of Abraham and his wives and children, referred to as the Law (John 15). We also read in another place that the prophets are also called the Law. Therefore, one who truly understands the Law is one who, according to Paul, examines not just its surface, but its essence. He who follows only the external appearance, like the Galatians, does not obey the Law.
People might suppose that in the case of Hagar Abraham acted [merely from human desire for procreation]. But the apostle makes the reverse clear, viewing this in relation to prophecy.
Because in the Old Testament the New is prefigured, those men of God who then understood this in the manner appropriate to their times are shown to have been ministers and performers of the old covenant but heirs of the new.
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SUMMARY
In Galatians 4:21, the Apostle Paul issues a direct and confrontational rhetorical challenge to the Galatian believers who were being swayed by false teachers to embrace adherence to the Mosaic Law as a path to righteousness or spiritual maturity. He questions their understanding of the very Law they desire to be under, setting the stage for a profound allegorical argument that will expose the true nature of legalism versus the liberating grace found in Christ. This verse underscores Paul's deep concern for the Galatians' spiritual freedom and his unwavering commitment to the gospel of justification by faith alone.
CONTEXT
Literary Context: Galatians 4:21 marks a pivotal transition in Paul's argument. Having established the superiority of the Abrahamic covenant of promise over the Mosaic Law in Galatians 3, and having explained the Law's temporary, pedagogical role as a "guardian" until Christ came (Galatians 3:24), Paul now directly confronts the Galatians' desire to return to a state of bondage under the Law. He has just reminded them of their initial spiritual experience and the absurdity of now seeking perfection through the flesh (Galatians 3:1-5). The preceding verses in Galatians 4 emphasize their new identity as "sons" and "heirs" through adoption by God's Spirit, contrasting this freedom with their former slavery to elemental spirits and the Law. Verse 21 serves as an immediate prelude to the powerful allegory of Hagar and Sarah, which will vividly illustrate the two covenants—one of bondage and one of freedom.
Historical & Cultural Context: The churches in Galatia, primarily composed of Gentile converts, were under immense pressure from a group Paul refers to as "Judaizers" (Galatians 2:4). These teachers, likely Jewish Christians, insisted that Gentile believers must be circumcised and observe other aspects of the Mosaic Law (such as dietary laws and Sabbath keeping) to be truly righteous or to be considered full members of God's people. For Jewish people, the Law (Torah) was central to their identity, a divine gift distinguishing them from other nations. To "be under the law" (ὑπὸ νόμον, hypo nomon) meant to be subject to its commands and, crucially, its curses for disobedience. The Judaizers believed that salvation required both faith in Christ and adherence to the Law, effectively adding human works to divine grace. Paul's letter vigorously refutes this syncretism, arguing that it undermines the sufficiency of Christ's work and enslaves believers.
Key Themes: This verse powerfully encapsulates several key themes central to the book of Galatians. Firstly, it highlights The Danger of Legalism, contrasting the freedom of the gospel with the spiritual bondage of seeking righteousness through human effort and adherence to external rules. Paul argues that desiring to be "under the law" is a regression, not progress, for those who have received the Spirit. Secondly, it addresses the Purpose of the Law, challenging the Galatians to understand that the Law was not given as a means of justification or salvation, but rather to reveal sin and to lead people to Christ (Galatians 3:24). Thirdly, the verse sets up the theme of Two Covenants (Law vs. Promise/Grace), which Paul will elaborate on immediately through the allegory of Hagar and Sarah, representing the covenant of Sinai (bondage) and the covenant of Abraham/Christ (freedom). Ultimately, Paul champions Freedom in Christ (Galatians 5:1) as the true state of believers, liberated from the Law's condemnation and empowered by the Spirit.
EXPOSITION AND ANALYSIS
Key Word Analysis
Verse Breakdown
Literary Devices
Paul employs several potent Literary Devices in Galatians 4:21 to amplify his message. The most prominent is the Rhetorical Question: "Tell me, ye that desire to be under the law, do ye not hear the law?" This is not a question seeking information, but rather a forceful declaration designed to provoke thought, challenge assumptions, and lead the audience to a specific conclusion. By posing it, Paul compels the Galatians to confront the inconsistency of their position. There is also an element of Apostrophe, as Paul directly addresses a specific group within the Galatian churches ("ye that desire to be under the law"), making the challenge intensely personal and immediate. Furthermore, a subtle Irony is present: those who claim to honor the Law by seeking to live "under" it are, in Paul's view, precisely those who have failed to truly "hear" or understand its deeper meaning and purpose within God's redemptive plan.
THEOLOGICAL AND THEMATIC CONNECTIONS
Galatians 4:21 stands as a stark theological confrontation between two fundamentally different approaches to God: legalism and grace. It underscores the profound truth that human effort and adherence to external regulations cannot achieve righteousness or spiritual maturity. Paul's challenge highlights the Law's true purpose not as a path to salvation, but as a revealer of sin and a guide pointing to the necessity of Christ. The verse emphasizes that salvation is a gift received through faith, not earned through works. To desire to be "under the law" is to reject the freedom and sonship offered in Christ, returning to a state of spiritual bondage. This theological distinction is paramount, safeguarding the unique and sufficient work of Jesus Christ as the sole basis for our standing with God.
REFLECTION AND APPLICATION
Galatians 4:21 serves as a timeless warning against the insidious allure of legalism, a spiritual temptation that persists in various forms even today. It challenges us to examine our own hearts: do we truly understand and embrace the liberating grace of the gospel, or are we subtly, perhaps unconsciously, seeking to add our own works or adherence to rules as a means of earning God's favor, proving our worth, or achieving a higher spiritual standing? Paul's rhetorical question, "do ye not hear the law?", prompts us to delve deeper into the Scriptures, not just to read them superficially, but to truly "hear" and comprehend God's redemptive plan. Authentic Christian living is not about striving under the burden of performance, but about resting in the finished work of Christ and living out of the abundance of His grace, empowered by the Holy Spirit. This verse calls us to cherish our freedom in Christ and to resist any teaching or personal inclination that would bind us again to a yoke of religious obligation.
Questions for Reflection
FAQ
What does Paul mean by "under the law" in Galatians 4:21?
Answer: When Paul speaks of being "under the law" (Greek: hypo nomon), he refers to being subject to the Mosaic Law as a system for achieving righteousness or salvation. It implies living under its demands, its condemnation for failure, and its inability to provide life or justification. For Paul, this state is one of spiritual bondage, contrasted with the freedom and adoption found through faith in Christ, where believers are "under grace" (Romans 6:14). He argues that the Law reveals sin and points to the need for a Savior, but it cannot make one righteous.
Why does Paul say, "do ye not hear the law?"
Answer: This is a rhetorical question designed to challenge the Galatians' understanding of the very Law they wish to follow. Paul implies that if they truly understood the Law's purpose and message, they would realize it does not offer salvation through works but rather reveals sin and points to the necessity of faith in Christ. He is setting the stage for his allegorical argument in Galatians 4:22-31, where he uses an Old Testament narrative (from the Law itself) to demonstrate the spiritual truths of two covenants: one of bondage (represented by Hagar and Mount Sinai) and one of freedom (represented by Sarah and the heavenly Jerusalem).
CHRIST-CENTERED FULFILLMENT
Galatians 4:21, with its pointed challenge to those who desire to be "under the law," finds its ultimate Christ-centered fulfillment in Jesus' perfect obedience and His atoning sacrifice. The Law, which reveals humanity's inability to achieve righteousness, ultimately points to Christ as its fulfillment and the one who perfectly satisfies its righteous demands. As Romans 10:4 declares, "Christ is the end of the law for righteousness to every one that believeth." He did not abolish the Law but fulfilled it (Matthew 5:17), thereby liberating believers from its curse and condemnation (Galatians 3:13). Through faith in Christ, we are no longer "under the law" in the sense of being bound by its demands for justification, but rather we are "under grace" (Romans 6:14), adopted as sons and heirs (Galatians 4:4-7). Jesus' life, death, and resurrection provide the perfect righteousness that the Law demanded but could not impart, offering true freedom and spiritual life to all who believe.