His powers are empathic based and in order to heal someone he has to take their pain and put it inside him. Not only that but he empathcially feels the pain of everyone he is near, from minor disease such as Paul's infection, to what Wild Bill did.
Wild Bill has empathic powers of his own.
Rather than healing people like John does. He revels in every physical emotional pain. Not only that but even after being drugged by Paul he was able to get catch John out of his Cell. Almost like he sensed him passing by.
John is somehow related to Abigail
John was one of God's true miracles, so it would make sense that someone closely related to him would be a prophet for God.
This movie and MouseHunt
share the same universe
Delacroix tries to avoid prison time by coming up with a new alias for himself: Quincy Thorpe, and getting a job with the historical society, however, someone within the society eventually finds out about his true identity and past, and has him turned in. Afterwards, the mouse, for some reason, decides he doesn't want to work in Ernie and Lars's string cheese factory, and finds its way to the prisoner, where Del adopts him and names him Mr. Jingles.
Coffey uses his power to show Percy what Wild Bill did.
Think about it: Percy sheds a Single Tear
, immediately empties his gun into Wild Bill, and goes catatonic. He is a petty, cruel, cowardly man who considers himself a badass. When he is shown true evil, he can't handle it. He automatically follows a visceral instinct to punish Bill, then his brain checks out.
Wild Bill is the twinner of Poke
Both were sadistic and took pride in their crimes.