God uses the way light plays through the clouds as a token of His covenant to all men and every other living creature on earth. What a remarkable sign!
Bows can come in many forms in addition to the rainbow. This morning we were fortunate to see the circumzenithal arc, an upside down bow created by the sun through ice crystals near the zenith.
And God said, This is the token of the covenant which I make between me and you and every living creature that is with you, for perpetual generations: I do set my bow in the cloud, and it shall be for a token of a covenant between me and the earth. And it shall come to pass, when I bring a cloud over the earth, that the bow shall be seen in the cloud: And I will remember my covenant, which is between me and you and every living creature of all flesh; and the waters shall no more become a flood to destroy all flesh. And the bow shall be in the cloud; and I will look upon it, that I may remember the everlasting covenant between God and every living creature of all flesh that is upon the earth. And God said unto Noah, This is the token of the covenant, which I have established between me and all flesh that is upon the earth. (Genesis 9:12-17)