Genesis 17:17-19

New Century Version

¹⁷ Abraham bowed facedown on the ground and laughed. He said to himself, “Can a man have a child when he is a hundred years old? Can Sarah give birth to a child when she is ninety?” ¹⁸ Then Abraham said to God, “Please let Ishmael be the son you promised.”

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.