Genesis 17:14-22
English Standard Version
15And God said to Abraham, "As for Sarai your wife, you shall not call her name Sarai, but Sarah shall be her name.
16I will bless her, and moreover, I will give you a son by her. I will bless her, and she shall become nations; kings of peoples shall come from her."
17Then Abraham fell on his face and laughed and said to himself, "Shall a child be born to a man who is a hundred years old? Shall Sarah, who is ninety years old, bear a child?"
18And Abraham said to God, "Oh that Ishmael might live before you!"
19God said, "No, but Sarah your wife shall bear you a son, and you shall call his name Isaac. I will establish my covenant with him as an everlasting covenant for his offspring after him.
20As for Ishmael, I have heard you; behold, I have blessed him and will make him fruitful and multiply him greatly. He shall father twelve princes, and I will make him into a great nation.
21But I will establish my covenant with Isaac, whom Sarah shall bear to you at this time next year."
