Genesis 17:15–21

¹⁵And God said unto Abraham, As for Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall her name be. ¹⁶And I will bless her, ^sand give thee a son also of her: yea, I will bless her, and she shall be a mother ^tof nations; kings of people shall be of her. ¹⁷Then Abraham fell upon his face, ^uand laughed, and said in his heart, Shall a child be born unto him that is an hundred years old? and shall Sarah, that is ninety years old, bear? ¹⁸And Abraham said unto God, O that ^xIshmael might live before thee! ¹⁹And God said, ^ySarah thy wife shall bear thee a son indeed; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant, and with his seed after him. ²⁰And as for Ishmael, I have heard thee: Behold, I have blessed him, and ^zwill make him fruitful, and will multiply him exceedingly; ^atwelve princes shall he beget, ^band I will make him a great nation. ²¹But my covenant will I establish with Isaac, which Sarah shall bear unto thee at this set time in the next year.