Genesis 17:15–21

¹⁵Then God said to Abraham, “As for Sarai your wife, you shall not call her name Sarai, but ⁷Sarah shall be her name. ¹⁶And I will bless her ^wand also give you a son by her; then I will bless her, and she shall be a mother ^xof nations; ^ykings of peoples shall be from her.”

¹⁷Then Abraham fell on his face ^zand laughed, and said in his heart, “Shall a child be born to a man who is one hundred years old? And shall Sarah, who is ninety years old, bear a child?” ¹⁸And Abraham ^asaid to God, “Oh, that Ishmael might live before You!”

¹⁹Then God said: “No, ^bSarah your wife shall bear you a son, and you shall call his name Isaac; I will establish My ^ccovenant with him for an everlasting covenant, and with his descendants after him. ²⁰And as for Ishmael, I have heard you. Behold, I have blessed him, and will make him fruitful, and ^dwill multiply him exceedingly. He shall beget ^etwelve princes, ^fand I will make him a great nation. ²¹But My ^gcovenant I will establish with Isaac, ^hwhom Sarah shall bear to you at this ⁱset time next year.”