Genesis 21:10-12

American Standard Version

¹⁰ Wherefore she said unto Abraham, Cast out this handmaid and her son: for the son of this handmaid shall not be heir with my son, even with Isaac. ¹¹ And the thing was very grievous in Abraham’s sight on account of his son. ¹² 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.