With the Almighty Power of God, along with a 21st century arsenal, you - Jesus Christ - are sent back to earth to kick some ass and take names (resulting in a list that St. Peter would likely kill to get his hands on).
"After 2000 years he's ready to cast the first stone"... clever!
It might be a hoax _now_, but some guys bound to do a mod for Half Life or something.
Good idea! Pity it's just a hoax. :(