And God said unto Abraham, Let it not be grievous in thy sight because of the lad, and because of thy handmaid. In all that Sarah saith unto thee, hearken unto her voice. For in Isaac shall thy seed be called.
Howbeit the (son) by the handmaid is born after the flesh; but the (son) by the freewoman (is born) through promise.
even he to whom it was said, In Isaac shall thy seed be called: