Genesis 6:13

6:13 So God said to Noah, “I have decided that all living creatures must die, for the earth is filled with violence because of them. Now I am about to destroy them and the earth.

Genesis 9:11

9:11 I confirm my covenant with you: Never again will all living things be wiped out by the waters of a flood; never again will a flood destroy the earth.”

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.”