As I was rummaging through the unpublished papers of Bilbo Baggins, I ran across his "Religious Demography of Middle-earth," in which he classifies the denizens of Middle-earth according to their religious affiliations.
Hobbits: Earnest little English Methodist countryfolk.
Frodo: Holy fool. Ought to be a conventional Methodist, but the monkish ways of Gandalf rubbed off on him, making him a holy fool, in the tradition of Eastern Orthodox hagiography.
Elves: A syncretistic cult. Their quaint speech and aristocratic airs are indebted to Anglicans; their hairdo is indebted to Jesus Freaks, while their archery is indebted to a DC comic book superhero.
Dwarves: Hard Shell Baptists, given their working-class values and clannishness.
Wizards: Catholic prelates, redolent with priestcraft: bachelors, vestments, temples, crosiers, incantations in dead languages.
Sauron: The Pope
Saruman: The Grand Inquisitor
Gandalf: Sedevacantist. The Archbishop Lefebvre of Middle-Earth. On a mission to defeat the Antipope.
Aragorn: Presbyterian. The John Knox of Middle-Earth.
Ringwraiths: Mormons, vibrant and substantial on the outside, hollow and dead on the inside.
Orcs: As apostate elves, they are militant atheists–which accounts for their intolerant and brutish behavior.