Genesis 9:13-16

13 I have set my rainbow in the clouds, and it will be the sign of the covenant between me and the earth.
14 Whenever I bring clouds over the earth and the rainbow appears in the clouds,
15 I will remember my covenant between me and you and all living creatures of every kind. Never again will the waters become a flood to destroy all life.
16 Whenever the rainbow appears in the clouds, I will see it and remember the everlasting covenant between God and all living creatures of every kind on the earth.”