Genesis:18:30-32
nkjv@Genesis:18:30 @ Then he said, "Let not the Lord be angry, and I will speak: Suppose thirty should be found there?" So He said, "I will not do it if I find thirty there."
nkjv@Genesis:18:31 @ And he said, "Indeed now, I have taken it upon myself to speak to the Lord: Suppose twenty should be found there?" So He said, "I will not destroy it for the sake of twenty."
nkjv@Genesis:18:32 @ Then he said, "Let not the Lord be angry, and I will speak but once more: Suppose ten should be found there?" And He said, "I will not destroy it for the sake of ten."