Ghoulia, let me straighten things out a little more.
(I haven't participated in the discussions in this thread, so I don't know what's been said or not, really).
You are free to believe what you want, sure. You can combine whatever belief with another. I would advice you though to try to search the truth, and only the truth - and here I am not saying what the truth is! - so that you're not building your life upon mental preferences. Our minds are apart from the truth, sometimes, and we are decieved by our own obilivion.
What I see as the truth is that if Jesus is Christ and the God of this universe, we have no purpose to do witchcraft. You are of course free to think differently.
And, since all of us are apart from the real truth, all our beliefs are in some sense "false". Our task is not to try to build a solid creed, but to find the truth, and, as I see it, to be found by the Truth.
And I truely hope the men you've encountered in life will learn what it means to suffer and repent, be brought unto to right path, so to speak. Others would say "burn in hell", but I'm not capable of saying such strong words... sometimes I wish I could.