Galatians 4: Sonship, Freedom, and Allegory

Short answer: Galatians 4 argues that believers are no longer slaves but adopted children and heirs through God's Son. It uses the story of Abraham's two sons as an allegory to contrast bondage under the law with freedom in the promise.

What Galatians 4 says

Paul begins by comparing an heir who is still a child to a slave. Though the heir owns everything, he remains under guardians and stewards until the father sets the day. In the same way, Paul says, believers were once held in bondage under the elemental principles of the world. But when the fullness of time came, God sent his Son, born of a woman and born under the law, to redeem those under the law so that they might receive adoption as children. Because they are children, God sent the Spirit of his Son into their hearts, crying out to the Father. So they are no longer slaves but sons, and if sons, then heirs through Christ.

Paul then turns to the Galatians' past and present. Formerly, when they did not know God, they were in bondage to beings that by nature are not gods. Now that they have come to know God, or rather to be known by God, he asks why they are turning back to weak and miserable elemental principles, wanting to be enslaved all over again. He points out that they observe days, months, seasons, and years, and he fears that his labor for them may have been wasted. He begs them to become as he is, for he became as they are. He reminds them that they did him no wrong, and that it was because of a weakness in his flesh that he first preached the good news to them. Though his condition was a trial to them, they did not despise or reject him but received him as an angel of God, even as Christ Jesus.

Paul continues by asking what blessing they enjoyed, testifying that if possible they would have plucked out their eyes and given them to him. He asks if he has become their enemy by telling them the truth. He explains that the false teachers zealously seek the Galatians in no good way; they desire to alienate them so that they will seek them. But Paul says it is always good to be zealous in a good cause, and not only when he is present. He calls them his little children, for whom he is again in travail until Christ is formed in them. He wishes he could be present with them now and change his tone, for he is perplexed about them.

Paul then appeals to the law itself, asking those who desire to be under the law if they listen to it. He recalls that Abraham had two sons, one by the servant and one by the free woman. The son by the servant was born according to the flesh, but the son by the free woman was born through promise. He says these things contain an allegory, for they are two covenants. One is from Mount Sinai, bearing children to bondage, which is Hagar. Hagar represents Mount Sinai in Arabia and corresponds to the present Jerusalem, for she is in bondage with her children. But the Jerusalem that is above is free, and she is the mother of us all. He cites the prophecy that the barren woman should rejoice, for the desolate has more children than she who has a husband. He concludes that believers, like Isaac, are children of promise. As the one born according to the flesh persecuted the one born according to the Spirit, so it is now. But Scripture says to throw out the servant and her son, for the son of the servant will not inherit with the son of the free woman. Therefore, brothers, we are not children of a servant but of the free woman.

Verses that carry the chapter

• “But when the fullness of the time came, God sent out his Son, born to a woman, born under the law,” (Galatians 4:4) — This verse marks the turning point of the chapter, announcing that God sent his Son at the fullness of time, born of a woman and born under the law. It grounds the believer's adoption in God's decisive action in history.
• “And because you are children, God sent out the Spirit of his Son into your hearts, crying, “Abba, Father!” (Galatians 4:6)” (Galatians 4:6) — This verse explains that the Spirit of God's Son is sent into believers' hearts, enabling them to cry out to God as Father. It shows that adoption is not a legal status only but an inward reality.
• “But now that you have come to know God, or rather to be known by God, why do you turn back again to the weak and miserable elemental principles, to which you desire to be in bondage all over again?” (Galatians 4:9) — This verse confronts the Galatians' desire to return to weak and miserable principles after knowing God. It captures the pastoral concern that drives the chapter.
• “So then, brothers, we are not children of a servant, but of the free woman.” (Galatians 4:31) — This verse concludes the allegory by declaring that believers are not children of a servant but of the free woman. It summarizes the chapter's argument for freedom in Christ.

Gospel connection

Galatians 4 connects the believer's adoption to the wider biblical story of promise and fulfillment. God promised Abraham a son through the free woman, and that promise was not based on human effort but on God's word. In the fullness of time, God sent his Son, born under the law, to redeem those under the law. This redemption is not a new idea but the climax of the promise made to Abraham. The Spirit of the Son now cries out in believers' hearts, making them children and heirs. The allegory of Hagar and Sarah shows that the earthly Jerusalem and its covenant of bondage cannot be the final home of God's people. The Jerusalem above is free, and she is the mother of all who believe. Thus the gospel creates a new family, born not of flesh but of promise, and it calls them to live as free children rather than slaves.

Application

This chapter asks readers to examine where they are still living as slaves rather than as children. It is easy to slip back into trying to earn God's favor through religious observances or human effort, as the Galatians were tempted to do. The application is to rest in the adoption that God has given through his Son and to rely on the Spirit who cries out within us. It also means letting go of any system that promises life through rule-keeping or special days. Instead, we are to live as heirs of the promise, free in Christ. This freedom is not a license for self-indulgence but a new identity that shapes how we relate to God and to one another. It calls for a settled confidence that we are known by God and loved as his children.

Biblical fidelity check

The chapter does not claim that the law itself is evil; it says the law was a guardian until the appointed time. It does not say that believers have no moral obligations; it says they are not slaves under the elemental principles. It does not give a detailed biography of Paul's illness or specify what his fleshly weakness was. It does not name the false teachers or describe their exact teachings beyond their desire to bring the Galatians under the law. The allegory of Hagar and Sarah is presented as an interpretation of Scripture, but the text does not explain every detail of the allegory. It does not claim that the earthly Jerusalem is beyond God's concern, but it contrasts it with the Jerusalem above. The chapter is silent on the timing of the fullness of time and on the specific practices the Galatians were observing beyond days, months, seasons, and years.

Questions for study

1. What does it mean to be an heir while still a child, and how does that picture help us understand our life before Christ?
2. Why does Paul emphasize that God sent his Son born of a woman and born under the law? What difference does that make for our redemption?
3. How does the Spirit's cry of Abba, Father change the way we relate to God?
4. What are the weak and miserable elemental principles that the Galatians were turning back to, and what might they look like today?
5. In the allegory of Hagar and Sarah, what is the difference between being a child of the servant and a child of the free woman?

Keep reading

Related studies: Galatians 1 Bible Study, Galatians 5 Bible Study, Most-Read Bible Study Articles, Genesis: Creation, Fall, Promise, and Covenant.

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FAQ

What does it mean that we are adopted as children of God?

It means that God has given us a new status and a new family. We are no longer slaves but sons and daughters, and because we are children, we are also heirs through Christ.

Why does Paul use Hagar and Sarah as an allegory?

He uses them to illustrate two covenants: one of bondage under the law and one of freedom through promise. The son of the servant represents those who rely on the flesh, while the son of the free woman represents those born of the Spirit.

What does it mean to be known by God?

It means that God has taken the initiative to know us and to make us his own. Our relationship with him does not rest on our own knowledge or effort but on his gracious choice and adoption.