On their search to find a way to defeat Lucifer, the brothers attempt to use the Colt and look for God, but it is revealed that the Colt cannot kill Lucifer and God does not care about the Apocalypse.[11][12] These actions make Dean decide to become Michael's vessel even if the result is the deaths of millions of people,[13] however, Sam's faith in Dean pulls him back into finding another solution.[14] Upon the death of the Archangel Gabriel, the brothers discover that by using the rings from the Four Horsemen of the Apocalypse, they can reopen and trap Lucifer back into Hell.[15] As Dean and Sam already have War and Famine's rings, they search for Pestilence and Death's location, leading Sam to meet his old college friend Brady: the guy who introduced Sam to Jessica and the demon ordered by Azazel to kill Jessica.