Genesis 9:11-13

I will establish My covenant with you: Never again shall all flesh be cut off by the water of a flood, nor shall there ever again be a flood to destroy and ruin the earth.” 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.