Galatians 4:21-28

21Tell me, you who desire to be under the law, do you not hear the law?

22For it is written that Abraham had two sons: the one by a bondwoman, the other by a freewoman.

23But he who was of the bondwoman was born according to the flesh, and he of the freewoman through promise,

24which things are symbolic. For these are the two covenants: the one from Mount Sinai which gives birth to bondage, which is Hagar—

25for this Hagar is Mount Sinai in Arabia, and corresponds to Jerusalem which now is, and is in bondage with her children—

26but the Jerusalem above is free, which is the mother of us all.

27For it is written: “Rejoice, O barren, You who do not bear! Break forth and shout, You who are not in labor! For the desolate has many more children Than she who has a husband.”

28Now we, brethren, as Isaac was, are children of promise.