Galatians 4:22-25

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

23But he who was of the bondwoman was born after the flesh; but he of the freewoman was by promise.

24Which things are an allegory: for these are the two covenants; the one from the mount Sinai, which gendereth to bondage, which is Hagar.

25For this Hagar is mount Sinai in Arabia, and answereth to Jerusalem which now is, and is in bondage with her children.