born in the ordinary course of nature. On the other hand, the son of the freewoman was one born through the promise, which class of things is allegorical. For these are two covenants, one from Mount Sinai, begetting bondage, which is as to its nature classed as Hagar. Now this Hagar is Mount Sinai in Arabia, and corresponds to the Jerusalem which now is, for she is in bondage with her children. But the Jerusalem which is above is free, which is our Mother. For it stands written, Rejoice, barren woman