I have never made fun of religion. Religion is something I don't even want to mess with, because I am really afraid of the clouds opening up and my being struck by lightning.
When you believe in God, you've got to believe in the all-powerful God. He's not just God; He's the all-powerful God and He has total control over everyone's life. The Devil, on the other hand, is a real character that's trying his hardest to tear your life apart.
You just let your lower self go, and then it takes on all these aspects of the society - the city with horns blowing, the people yelling things at each other, and the all-in-all violence and chaos of the city. Put that on stage with music, and that's what this is.