Frederick Buechner said this quote

“ ...With a religious book it is less what we see in it than what we see through it that matters. J. R. R. Tolkien's fairy-tale epic the Lord of the Rings helps draw the distinction perhaps. Some of its admirers have tried to make it into a religion book by claiming, among other things, that the Ring of Power which must be destroyed is the hydrogen bomb. Tolkien, on the other hand, denied this unequivocally. But intended or otherwise, there can be little doubt that for many it has become a religious book. The Frodo Lives buttons are not entirely a joke, because something at least comes to life through those fifteen hundred pages, although inevitably it is hard to say just what. It seems to have something to do with the way Tolkien has of making us see the quididity of things like wood, bread, stone, milk, iron, as though we have never seen them before or not for a long time, which is probably the truth of the matter; his landscapes set deeper echoes going in us than any message could. He gives us back a sense that we have mostly lost of the things of the earth, and because we are ourselves of the earth, whatever else, we are given back too some sense of our own secret. Very possibly again he did not intend it. I may well be axiomatic that, religiously, a writer achieves most when he is least conscious of doing so. Certainly the attempt to be religious is as doomed as the attempt to be poetic is. ”