Galatians 4:21-31
Those who belong to Christ are children of promise, not children of slavery.
21 Tell me, you that desire to be under the law, don’t you listen to the law?
22 For it is written that Abraham had two sons, one by the servant, and one by the free woman.
23 However, the son by the servant was born according to the flesh, but the son by the free woman was born through promise.
24 These things contain an allegory, for these are two covenants. One is from Mount Sinai, bearing children to bondage, which is Hagar.
25 For this Hagar is Mount Sinai in Arabia, and answers to the Jerusalem that exists now, for she is in bondage with her children.
26 But the Jerusalem that is above is free, which is the mother of us all.
27 For it is written, “Rejoice, you barren who don’t bear. Break out and shout, you who don’t travail. For the desolate have more children than her who has a husband.”
28 Now we, brothers, as Isaac was, are children of promise.
29 But as then, he who was born according to the flesh persecuted him who was born according to the Spirit, so also it is now.
30 However what does the Scripture say? “Throw out the servant and her son, for the son of the servant will not inherit with the son of the free woman.”
31 So then, brothers, we are not children of a servant, but of the free woman.
Those who belong to Christ are children of promise, not children of slavery.
Paul uses the account of Hagar and Sarah to show that those who seek covenant standing through law belong to slavery, while those who belong to Christ are children of promise and freedom.
This passage concludes Paul’s sustained argument in Galatians 3:1–4:31 concerning promise, law, sonship, and inheritance. After showing that Abraham was counted righteous by faith and that the law came later without annulling the promise, Paul now turns the Galatians’ desire for the law back upon itself. His question, 'do you not listen to the law,' exposes the inconsistency of wanting Torah as covenant security while ignoring its own testimony about promise and inheritance. The Hagar-Sarah contrast functions as a climactic pastoral and theological appeal before Paul moves into the direct freedom exhortation of Galatians 5:1. The flow moves from historical narrative to theological correspondence, from present danger to identity reminder, and from bondage warning to the declaration that believers are children of the free woman.
Rival teachers were urging the Galatians to adopt law observance as necessary for full covenant belonging. Paul answers from the Torah itself, showing that Abraham's own household contains a contrast between slavery and promise that exposes the danger of their proposed path.
No Longer Slaves: Sonship, Pastoral Anguish, and Children of Promise
God sent his Son to redeem slaves into sons and sent the Spirit of his Son to assure them as heirs, so believers must not return to the slavery of flesh, law-reliance, or promise-denying religion.