Galatians 4:21-25 New Revised Standard Version Catholic Edition (NRSVCE)
The Allegory of Hagar and Sarah
21 Tell me, you who desire to be subject to the law, will you not listen to the law? 22 For it is written that Abraham had two sons, one by a slave woman and the other by a free woman. 23 One, the child of the slave, was born according to the flesh; the other, the child of the free woman, was born through the promise. 24 Now this is an allegory: these women are two covenants. One woman, in fact, is Hagar, from Mount Sinai, bearing children for slavery. 25 Now Hagar is Mount Sinai in Arabia[a] and corresponds to the present Jerusalem, for she is in slavery with her children.