Genesis 9:13

9:12 And God said: "This is the sign of the covenant which I make between Me and you, and every living creature that is with you, for perpetual generations:

9:13 I set My rainbow in the cloud, and it shall be for the sign of the covenant between Me and the earth.

9:14 It shall be, when I bring a cloud over the earth, that the rainbow shall be seen in the cloud;