Genesis 9:12-13: And God said: "This is the sign of the covenant, which I am placing between Me and between you, and between every living soul that is with you, for everlasting generations. My rainbow I have placed in the cloud, and it shall be for a sign of a covenant between Myself and the earth. “
Why does a rainbow, an ephemeral phenomena, remind us of an everlasting covenant?
Looking closely at the fleeting beauty of creation, we see that the passing away of phenomena is not the same as destruction. All experience and all creation arises and passes. Yet underneath the flux of experience we can sense something eternal, something constant, something that is the source of creation. We bless a rainbow because in blessing the fleeting, we become aware of its eternal source.