Bible verses about "colors of the rainbow" | Darby

¹⁸ Come now, let us reason together, saith Jehovah: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool.

¹³ I set my bow in the clouds, and it shall be for a sign of the covenant between me and the earth.

³ and he [that was] sitting like in appearance to a stone [of] jasper and a sardius, and a rainbow round the throne like in appearance to an emerald.