17 They are enthusiastic about you, but not for any good. Instead, they want to isolate you so you will be enthusiastic about them.
18 Now it is always good to be enthusiastic about good — and not just when I am with you.
19 My children, I am again suffering labor pains for you until Christ is formed in you.
20 I would like to be with you right now and change my tone of voice, because I don’t know what to do about you.
21 Tell me, those of you who want to be under the law, don’t you hear the law?
22 For it is written that Abraham had two sons, one by a slave and the other by a free woman.
23 But the one by the slave was born according to the impulse of the flesh, while the one by the free woman was born as the result of a promise.