Genesis 17:17-19

Young's Literal Translation

¹⁷ And Abraham falleth upon his face, and laugheth, and saith in his heart, `To the son of an hundred years is one born? or doth Sarah -- daughter of ninety years -- bear?'

¹⁸ And Abraham saith unto God, `O that Ishmael may live before Thee;'

¹⁹ and God saith, `Sarah thy wife is certainly bearing a son to thee, and thou hast called his name Isaac, and I have established My covenant with him, for a covenant age-during, to his seed after him.