With minute careful planning, the [[Prime Evils]] manipulated the [[Lesser Evils]] of [[Azmodan]] and [[Belial]] to revolt against the [[Three]], exiling them on to Sanctuary in a much weakened Spirit form. The angels saw this and assumed the new rulers of Hell would imminently attack the gates of Heaven, so they withdrew their support from Sanctuary, feeling that if the human race survived they might be worthy allies after all.  HoweverWhile there, the angels could not resist the chance of capturing the weakened [[Prime Evils]].  The Three had not heeded Izual's warnings of being weakened on the [[Sanctuary|mortal realmprime evils]], and found themselves shut off from their source of power, draining themselves to just stay alive. They found that this did not happen when possessing a [[human]] body, they retained their power and also managed to accumulate more from other mortal's souls, up to a point of what their host body could hold. Strong minds and bodies were better vessels, but also harder to possess.  With this new knowledge, the Three ravaged the human kingdoms, gathering and using power wildly.