Galatians 4:19-29

19 my dear children, I am suffering the pains of giving birth to you all over again - and this will go on until the Messiah takes shape in you.
20 I wish I could be present with you now and change my tone of voice. I don't know what to do with you.
21 Tell me, you who want to be in subjection to the system that results from perverting the Torah into legalism, don't you hear what the Torah itself says?
22 It says that Avraham had two sons, one by the slave woman and one by the free woman.
23 The one by the slave woman was born according to the limited capabilities of human beings, but the one by the free woman was born through the miracle-working power of God fulfilling his promise.
24 Now, to make a midrash on these things: the two women are two covenants. One is from Mount Sinai and bears children for slavery - this is Hagar.
25 Hagar is Mount Sinai in Arabia; she corresponds to the present Yerushalayim, for she serves as a slave along with her children.
26 But the Yerushalayim above is free, and she is our mother;
27 for the Tanakh says, "Rejoice, you barren woman who does not bear children! Break forth and shout, you who are not in labor! For the deserted wife will have more children than the one whose husband is with her!"i
28 You, brothers, like Yitz'chak, are children referred to in a promise of God.
29 But just as then the one born according to limited human capability persecuted the one born through the Spirit's supernatural power, so it is now.