Fallen Arches

There was a war in heaven. A war in which Sataniel, the head angel thought himself better than just an angel, and rose up against God. The body of angels was torn. Legions sided with Sataniel. And they faught to over through the king of kings. Though God had legion beyond legions of angels still loyal. Fighting to protect their maker. Eventually the angels managed to throw satan and the rest of the forsaken out of the realm of heaven. Still, the war continues.
God knew what Satan had started to plan. And so he sent one of his Arch angels down to earth, to go to the Garden of Edan and warn Adam of the temptation that would surly be in their path. Later God sent the same angel to bound Azazel, a Fallen angel, a forsaken, that had sided with satan in the war. He sent him to bind the demon under a desert called Dudael.
As scripture says:

"And again the Lord said to him: 'Bind Azazel hand and foot, and cast him into the darkness: and make an opening in the desert, which is in Dudael, and cast him there in. And place upon him rough and jagged rocks, and cover him with darkness, and let him abide there for ever, and cover his face that he may not see light. And on the day of the great judgment he shall be cast into the fire."

The lord had great plans for this Angel. An angel named Raphael.