Genesis:18:27-28
rsv@Genesis:18:27 @ Abraham answered, "Behold, I have taken upon myself to speak to the Lord, I who am but dust and ashes.
rsv@Genesis:18:28 @ Suppose five of the fifty righteous are lacking? Wilt thou destroy the whole city for lack of five?" And he said, "I will not destroy it if I find forty-five there."