Children of the Promise

Galatians 4:12-5:1, NRSV

Friends, I beg you, become as I am, for I also have become as you are. You have done me no wrong. You know that it was because of a physical infirmity that I first announced the gospel to you; though my condition put you to the test, you did not scorn or despise me, but welcomed me as an angel of God, as Christ Jesus. What has become of the good will you felt? For I testify that, had it been possible, you would have torn out your eyes and given them to me. Have I now become your enemy by telling you the truth?
They make much of you, but for no good purpose; they want to exclude you, so that you may make much of them. It is good to be made much of for a good purpose at all times, and not only when I am present with you.
My little children, for whom I am again in the pain of childbirth until Christ is formed in you, I wish I were present with you now and could change my tone, for I am perplexed about you.
Tell me, you who desire to be subject to the law, will you not listen to the law? For it is written that Abraham had two sons, one by a slave woman and the other by a free woman. 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. Now this is an allegory: these women are two covenants. One woman, in fact, is Hagar, from Mount Sinai, bearing children for slavery. Now Hagar is Mount Sinai in Arabia and corresponds to the present Jerusalem, for she is in slavery with her children. But the other woman corresponds to the Jerusalem above; she is free, and she is our mother. For it is written, “Rejoice, you childless one, you who bear no children, burst into song and shout, you who endure no birthpangs; for the children of the desolate woman are more numerous than the children of the one who is married.” Now you, my friends, are children of the promise, like Isaac. But just as at that time the child who was born according to the flesh persecuted the child who was born according to the Spirit, so it is now also. But what does the scripture say? “Drive out the slave and her child; for the child of the slave will not share the inheritance with the child of the free woman.” So then, friends, we are children, not of the slave but of the free woman.