Genesis 17:19-21

New Century Version

¹⁹ God said, “No, Sarah your wife will have a son, and you will name him Isaac.^[a] I will make my agreement with him to be an agreement that continues forever with all his descendants.

²⁰ “As for Ishmael, I have heard you. I will bless him and give him many descendants. And I will cause their numbers to grow greatly. He will be the father of twelve great leaders, and I will make him into a great nation. ²¹ But I will make my agreement with Isaac, the son whom Sarah will have at this same time next year.”