Genesis 18:26-28

And the LORD replied, “If I find fifty righteous people in Sodom, I will spare the entire city for their sake.” Then Abraham spoke again. “Since I have begun, let me speak further to my Lord, even though I am but dust and ashes. Suppose there are only forty-five righteous people rather than fifty? Will you destroy the whole city for lack of five?” And the LORD said, “I will not destroy it if I find forty-five righteous people there.”