<p>4:22 <i>For it is written that Abraham had two sons. One by the handmaid, and one by the freewoman</i>- The allegory, like all such methods of presenting, is presenting history selectively; although it is axiomatic that history of itself is selective. Abraham had far more than two sons; he had others by Keturah and other handmaids, indeed it could be argued that he had them before the birth of Isaac and Ishmael. But the two sons are chosen here for the purposes of the allegory.</p>