Genesis 17:15-19 And God said unto Abraham, As for Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall her name be.

ERV⁽ⁱ⁾ ¹⁵ And God said unto Abraham, As for Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall her name be. ¹⁶ And I will bless her, and moreover I will give thee a son of her: yea, I will bless her, and she shall be [a mother of] nations; kings of peoples shall be of her. ¹⁷ Then Abraham fell upon his face, and 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? ¹⁸ And Abraham said unto God, Oh that Ishmael might live before thee! ¹⁹ And God said, Nay, but Sarah thy wife shall bear thee a son; and thou shalt call his name Isaac: and I will establish my covenant with him for an everlasting covenant for his seed after him.