The Rainbow in Genesis

In Genesis, the word is not actually rainbow, it is simply bow. Throughout the OT, the word is always referring to only one thing. It is the instrument of war that God says He holds and He points at His enemies. He points it at the hearts of the wicked. When God says, He is going to hang His bow on the cloud. It means that He is putting away His instrument of warfare and He says that He will no longer destroy the earth with a flood.

It is interesting to notice, what way does the bow hang when you look at the sky after a storm has passed through?It is actually pointing up. While this part is not in the text, it is in the narrative of the Bible. If you were to put a string across that bow and you were to put an arrow on that bow and fire it. Which direction would fly? It would fly up to heaven where God is.

The next time you find God pouring out His wrath for the sin of the entire world is when He floods the cross of Calvary with His wrath to satisfy eternal justice and take care of the sins of the world when He Himself receives that wrath
--Kirk Cameron, Janet Mefford 1/23/14
--Also in his DVD, "Unstoppable"