Yip Harburg who wrote “Over the Rainbow” was an Atheist. His “Ain’t it the Truth” was cut from the movie Cabin in the Sky for being “irreverent”. The song takes subtle digs at religion. Lena Horne went on to sing it in another musical.
The Trent Reznor/Pigface song “Suck” starts off with the lines. “There is no God up in the sky tonight / No sign of Heaven anywhere in sight…” The Nine Inch Nails song “Heresy” is a blatant attack on Christianity, in the Nietzschian manner with lines like, “Your God is dead and no one cares / if there is a Hell, I’ll see you there”. Lard’s “Can God Fill Teeth” is a great satire on abusing the divine for a profit. I’m sure if I went through all my Industrial albums/records I could find many more. Ooh, Foetus’ “Take It Outside Godboy” is quite irreverent.