Genesis 9:13

I do set my bow in the cloud, and it shall be for a token of a covenant between me and the earth.

Notes:

God placed a rainbow in the clouds. It was not a bow. token here should be a sign of the covenant. This is just speculation, but I wonder about a covenant being made between God and the Earth. The Earth is not a person. My guess is that the covenant was with man and not the Earth.