Genesis 17:15-19 And God said to Abraham, As for Sarai your wife, you shall not call her name Sarai, but her name shall be Sarah.

MKJV⁽ⁱ⁾ ¹⁵ And God said to Abraham, As for Sarai your wife, you shall not call her name Sarai, but her name shall be Sarah. ¹⁶ And I will bless her, and give you a son also of her. Yes, I will bless her, and she shall be a mother of nations, kings of people shall be from her. ¹⁷ And Abraham fell upon 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? ¹⁸ And Abraham said to God, Oh that Ishmael might live before You! ¹⁹ And God said, Sarah your wife shall bear you a son indeed. And you shall call his name Isaac. And I will establish My covenant with him for an everlasting covenant, and with his seed after him.