Read Genesis 18:31 Using Other Translations
And he said, Behold now, I have taken upon me to speak unto the Lord: Peradventure there shall be twenty found there. And he said, I will not destroy it for twenty's sake.
He said, "Behold, I have undertaken to speak to the Lord. Suppose twenty are found there." He answered, "For the sake of twenty I will not destroy it."
Then Abraham said, “Since I have dared to speak to the Lord, let me continue—suppose there are only twenty?” And the LORD replied, “Then I will not destroy it for the sake of the twenty.”