John 3:16 says the following:
For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.
Oh yeah, that is DEFINITELY a message which is made more powerful when welded onto a giant metal gun.
Update: Well it looks like the mailbox is absolutely real, but Biblical references are not.
Still quite disturbing but not as religiously offensive as first thought.
How would YOU like to be the mailman who has to deliver this guys mail?