Genesis 18:24

18:24 What if there are fifty godly people in the city? Will you really wipe it out and not spare the place for the sake of the fifty godly people who are in it?

Genesis 18:31-32

18:31 Abraham said, “Since I have undertaken to speak to the Lord, what if only twenty are found there?” He replied, “I will not destroy it for the sake of the twenty.”

18:32 Finally Abraham said, “May the Lord not be angry so that I may speak just once more. What if ten are found there?” He replied, “I will not destroy it for the sake of the ten.”