21 Tell me, you that desire to be under the law, have you not read the law?
22 For it is written that Abraham had two sons: the one by a bondwoman, and the other by a free woman.
23 But he who was of the bondwoman, was born according to the flesh: but he of the free woman, was by promise.
24 Which things are said by an allegory. For these are the two testaments. The one from mount Sina, engendering unto bondage; which is Agar:
25 For Sina is a mountain in Arabia, which hath affinity to that Jerusalem which now is, and is in bondage with her children.
26 But that Jerusalem, which is above, is free: which is our mother.
27 For it is written: Rejoice, thou barren, that bearest not: break forth and cry, thou that travailest not: for many are the children of the desolate, more than of her that hath a husband.