Galatians 4:27-31

27For it is written: “1Rejoice, infertile one, you who do not give birth; Break forth and shout, you who are not in labor; For the children of the desolate one are more numerous Than those of the one who has a husband.” 28And you, brothers and sisters, 2like Isaac, are 3children of promise. 29But as at that time 4the son who was born according to the flesh 5persecuted the one who was born according to the Spirit, 6so it is even now. 30But what does the Scripture say? “7Drive out the slave woman and her son, For 8the son of the slave woman shall not be an heir with the son of the free woman.” 31So then, brothers and sisters, we are not children of a slave woman, but of the free woman.