Genesis 17:15-21

Revised Standard Version Catholic Edition

¹⁵ And God said to Abraham, “As for Sar′ai your wife, you shall not call her name Sar′ai, but Sarah shall be her name. ¹⁶ I will bless her, and moreover I will give you a son by her; I will bless her, and she shall be a mother of nations; kings of peoples shall come from her.” ¹⁷ Then 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?” ¹⁸ And Abraham said to God, “O that Ish′mael might live in thy sight!” ¹⁹ God said, “No, but Sarah your wife shall bear you a son, and you shall call his name Isaac.^[a] I will establish my covenant with him as an everlasing covenant for his descendants after him. ²⁰ As for Ish′mael, I have heard you; behold, I will bless him and make him fruitful and multiply him exceedingly; he shall be the father of twelve princes, and I will make him a great nation. ²¹ But I will establish my covenant with Isaac, whom Sarah shall bear to you at this season next year.”