18. It is fine to be zealous, provided the purpose is good, and to be so always, not just when I am with you.
19. My dear children, for whom I am again in the pains of childbirth until Christ is formed in you,
20. how I wish I could be with you now and change my tone, because I am perplexed about you!
21. Tell me, you who want to be under the law, are you not aware of what the law says?
22. For it is written that Abraham had two sons, one by the slave woman and the other by the free woman.