Genesis 17:15-17

Darby Translation

¹⁵ And God said to Abraham, [As to] Sarai thy wife, thou shalt not call her name Sarai, but Sarah shall be her name.

¹⁶ And I will bless her, and I will give thee a son also of her; and I will bless her, and she shall become nations: kings of peoples shall be of her.

¹⁷ And Abraham fell on his face and laughed, and said in his heart, Shall [a child] be born to him that is a hundred years old? and shall Sarah, who is ninety years old, bear?