This catchy little number was part of a sketch of the same name from a much bigger, now defunct TV pilot. The whole thing was dumped due to it being politically incorrect, ahem, err, Little Britain anyone? OK, this sketch was not meant to cause offence (really), just a cheeky ditty penned after seeing a particularly intense happy clappy evangelical rendering on the street.
Please do not write in to complain, I've had a chat with God and he forgives me. In fact he re-wrote the middle eight, a 1.2.3.4.