Well where else do people get their genetic gifts from? Now I will admit HP doesn't adhere to a Biblical worldview, it really doesn't deal with the whole God issue at all, but in so doing it also doesn't contradict the Biblical worldview. It's off in it's own world, like most fantasy fiction, and doesn't worry about it one way or the other. But it's clearly demonstrated in the early chapters that wizarding power, in the imaginary world of HP, does not come from the dark sources the Bible warns about. It's genetic, pure and simple. Wizards are wizards at birth, not by training. A wizard that receives no training will still be a wizard, but probably not very good at it. A wizard that never gets any kind of explanation for the wierd events in there life, will still be a wizard.
The kids on the good guy side don't bring glory unto themselves. Harry hates all the fame that surrounds him, he has two goals in life: avenge his parents, fade into anonymity. Glory is a big irritant to him.
No power is neutral. The source of their power is the genes, the same source for power that Michael Jordan, Stephen Hawkings and Beethoven have. Most of the time in this world we ascribe that kind of genetic gift as coming from God.
Actually that is the source for the power in the Bible. That's why it's bad. In HP, being as it's not the real world, it's a different story.
They aren't trying to take power, once again the objections of the anti-HP crowd have zero support in the books, they're trying to control their own power. The power is there, they have it whether they want it or not, the big question is what do they do with it.
The problem is that supernatural powers are REAL. The Harry Potter books use all of the trappings of real people who are evil (witches casting spells, conjurers, etc.), but portrays it as if it is possible to use these very real powers and NOT be an abomination.
I don't expect the atheists and non-Christians on this thread to get it. They don't see what the big "fuss" is all about and why Christians avoid spiritism and the occult, because they don't acknowledge that these things are real.
But as a Bible believer, you KNOW that these things are real. What we do with our power is what God wants us to do with it. Not to get vengeance on people who made us angry or any other self-centered purpose.
The Harry Potter books take evil things that exist (witches, conjurers, spellcasters) and portray them as doing good things for themselves and the people they care about.