It has always made me wonder... Why do you think that Tolkien left religion out of LOTR since he himself was such a religious person? I know that the Sill. is almost like the bible of ME. But he makes no referrence to any of it in LOTR really.
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Maybe he thought it was improtant to write a story about creation and war etc similar to the Bible but not include religion so it was verly much like the Bilbe.
__________________ *There is only one Lord of the Rings, only one...*
Damn - I heard the reason for this once...but I've forgotten...something like "with all the fantastical elements of ME, theres was no need for a divine entity, for so much of ME was already filled or touched by them"...
Read that. It shows you that LOTR is very religious (Christian, in fact). And I'm well aware that Tolkien already said that nothing he wrote was supposed to have anything to do with his experiences in WW1 but I think that statement ought to be ignored.
Tolkien integrated his religion into his Middle-earth. The mythology is nearly the perfect amalgam of Christianity and ancient Graeco-Roman mythology.
Tolkien referred to "the first fall of Man" in many of his letters, (referring of course to Man's fall from grace in Eden), and called the Downfall of Númenor/Anadûnê the second fall.
So, in my opinion, Tolkien incorporated his religion into his mythos at every turn. But, he did so in a non-threatening way.