While at first it sounds like an atheist anthem it really isn't.
The line; "The ransom of your soul must be paid for your dead. The way out for us all: We'll take the jailer's head." is in reference to Jesus death on the stake. Marco and the guys aren't proclaimed atheists but its very possible they want nothing to do with religion. Maybe this song is talking about that.
While at first it sounds like an atheist anthem it really isn't. The line; "The ransom of your soul must be paid for your dead. The way out for us all: We'll take the jailer's head." is in reference to Jesus death on the stake. Marco and the guys aren't proclaimed atheists but its very possible they want nothing to do with religion. Maybe this song is talking about that.