Genesis 9:12-15

And God said, “This is the token (visible symbol, memorial) of the [solemn] covenant which I am making between Me and you and every living creature that is with you, for all future generations; I set My rainbow in the clouds, and it shall be a sign of a covenant between Me and the earth. It shall come about, when I bring clouds over the earth, that the rainbow shall be seen in the clouds, and I will [compassionately] remember My covenant, which is between Me and you and every living creature of all flesh; and never again will the water become a flood to destroy all flesh.