Here is a great article about the Lord of the Rings ans it's connection to the Passion of Christ.

"In a letter J.R.R. Tolkien tells a friend that the central theme of The Lord of the Rings is the temptation to immortality. The immortality that the main characters must renounce is the vague but very real natural omnipotence offered them by use of the Dark Lord's Ring of Power. In their quest to destroy it the heroes of the trilogy—Bilbo, Frodo, Aragorn, Gandalf, Sam and Galadriel—all face the temptation to use the power of the Ring to inflate their present state of being beyond all decency and make themselves into a Dark Lord, all-powerful and immortal ".... read on below


The Passion According to Tolkien