timothy1769,
The magic of Lewis and Tolkien is not "magic" it is generally speaking the nature of a being, not the common harry potter magic of witches, cauldrons, spells, etc.
There is a big difference, If you read a couple of the Harry potter threads we have discussed this at length with both quotes from all the works in question, as well as some from the "good book" which I assume is a reference to the Bible.
Lewis and Tolkien clearly both have Christian themes in their books, but in entirely different ways, as Lewis clearly wrote intentional allegory, a genre which Tolkien disliked immensly, and said any reference to reality in his books was in the mind of the reader. Magic as a black art, or even a white and/or black art is not discussed by Tolkien in the sense of the magic that is practiced by such groups as Wicca, the pattern for much of the Harry Potter magic, and admittedly, Rowlings tries very hard to make her magic "real" meaning that if you want to become like Harry Potter, you can. Tolkien's "magic" is fictional in nature, not for an ulterior motive, but to serve a purpose merely in the story. It bears little resemblance outside of the terminology to "magic" as we know it. He actually tried to find a different word to describe the abilities of many of his characters, in his mind, the "magic" of the elves for instance was not a learned art, but a part of their nature. In the section with Galadriel, Sam, and Frodo looking into the mirror of Galadriel, She refers to Sam wanting to see "elf-magic" and says the mirror is what would be called magic, although she doesn't know exactly what is meant by that. This scene is an illustration of Tolkien's reticence to use themes that could be linked to occult "magic"
The Hobbit and LOTR are two of the best pieces of modern literature ever written, and they really do have some very positive and constructive themes and lessons in them. Everything from friendship, loyalty and duty, to the supremacy of God's plan, and the dangers of complacency. I don't view them as dangerous in and of themselves. I agree that every precaution should be taken to avoid pagan and occult practice, and even the study or interest in such things, but I don't view Tolkien or Lewis' work as so called gateway mediums to get a person interested in the occult, since the "magic" in their works is far removed from the sinful practice of witchcraft, now Harry Potter on the other hand...