22For it is written, that Abraham had two sons, one by the handmaid, and one by the freewoman.
23Howbeit the [son] by the handmaid is born after the flesh; but the [son] by the freewoman [is born] through promise.
24Which things contain an allegory: for these [women] are two covenants; one from mount Sinai, bearing children unto bondage, which is Hagar.
25Now this Hagar is mount Sinai in Arabia and answereth to the Jerusalem that now is: for she is in bondage with her children.
26But the Jerusalem that is above is free, which is our mother.
27For it is written, Rejoice, thou barren that bearest not; Break forth and cry, thou that travailest not: For more are the children of the desolate than of her that hath the husband.
28Now we, brethren, as Isaac was, are children of promise.