Galatians 4:22-29
4:22 For it is written that Abraham had two sons, one by the
slave woman and the other by the free woman.
4:23 But one, the son by the slave woman, was born by natural descent,
while the other, the son by the free woman, was born through the promise.
4:24 These things may be treated as an allegory,
for these women represent two covenants. One is from Mount Sinai bearing children for slavery; this is Hagar.
4:25 Now Hagar represents Mount Sinai in Arabia and corresponds to the present Jerusalem, for she is in slavery with her children.
4:26 But the Jerusalem above is free,
and she is our mother.
4:27 For it is written:
“Rejoice, O barren woman who does not bear children;
break forth and shout, you who have no birth pains,
because the children of the desolate woman are more numerous
than those of the woman who has a husband.”
4:28 But you, brothers and sisters, are children of the promise like Isaac.
4:29 But just as at that time the one born by natural descent persecuted the one born according to the Spirit, so it is now.