19. My dear children! Once again, just like a mother in childbirth, I feel the same kind of pain for you until Christ's nature is formed in you.
20. How I wish I were with you now, so that I could take a different attitude towards you. I am so worried about you!
21. Let me ask those of you who want to be subject to the Law: do you not hear what the Law says?
22. It says that Abraham had two sons, one by a slave woman, the other by a free woman.
23. His son by the slave woman was born in the usual way, but his son by the free woman was born as a result of God's promise.
24. These things can be understood as a figure: the two women represent two covenants. The one whose children are born in slavery is Hagar, and she represents the covenant made at Mount Sinai.