Which is interesting, since he is credited with C.S. Lewis’ Christian awakening... to write his great book “Mere Christians”, and “The Screwtape Letters”.
Tolkein, from his trilogy was a believer in GOOD vs.Evil (the evil of the day being Hitler and before that the Kaiser... both aided as he saw it by the very real Satan).
“The Screwtape Letters” read by Cleese are a masterpiece.