When Lambs Eat Lions

A tall, mysterious white man moves into a neighborhood that is caught in a turf war between three rival gangs. He becomes a threat to the gangs when the residents begin to lose their fear of the gangs and they begin to lose members.

They plot to take this bible thumping interloper out, but soon discover they had made a mistake of biblical proportions.

Who or what is he?

The residents think he's an angel sent from heaven.
The gangs think he's a demon sent from hell.
The local clergy think he's the Lamb returning as the Lion to usher in the End of Days.

Or is he something else?