Genesis:21:10-13
akjv@Genesis:21:10 @ Why she said to Abraham, Cast out this female slave and her son: for the son of this female slave shall not be heir with my son, even with Isaac.
akjv@Genesis:21:11 @ And the thing was very grievous in Abraham' sight because of his son.
akjv@Genesis:21:12 @ And God said to Abraham, Let it not be grievous in your sight because of the lad, and because of your female slave; in all that Sarah has said to you, listen to her voice; for in Isaac shall your seed be called.
akjv@Genesis:21:13 @ And also of the son of the female slave will I make a nation, because he is your seed.