"Cast out this bondwoman and her son; for the son of this bondwoman will not be heir with my son, Isaac."
And the thing was grievous in Abraham's sight, because of his maidservant and because of his son, that he should drive them from him.
And God said to Abraham "Let it not be grievous in thy sight, because of the child and because of the bondwoman; in all that Sarah hath said unto thee, hearken to her words and do (them); for in Isaac shall thy name and seed be called.
But as for the son of this bondwoman I will make him a great nation, because he is of thy seed."