Headinhands if God chooses to reveal things to us that is his choice. Actually, the meaning of prophecy in the Bible is more about God revealing specific things about situations or people rather than what will happen in the future. Sometimes prophecies were made about what could happen, things changed and they did not happen, so it is not about fortune telling so much as speaking the things on God's heart, in part, but it is a much bigger subject, maybe one for a thread!
although I will warn you I know very little about this topic so you may (metaphorically) batter me with it!
Headinhands I can certainly not provide you with any evidence for the existence of a spiritual realm, evil or good, neither can you provide any evidence that it does not exist. I think we have danced this dance before! 
However, I can tell you I have met people who have 'dabbled' in the 'occult' including ouija boards etc and have been very damaged by it. So whether it is an evil spirit or their own concious that has caused the harm I would say it was not a positive experience. To some degree I would include Tarot cards in this subject.
Headinhands If you would like to debate with me, please do, please start a new thread and I will join you, and we can include drLu to join us, I just fear I am derailing drLu's thread and I would rather not so I will post about this any more unless drLu asks me to.
combusti Satan is mentioned in the Old Testament, which is the Hebrew scriptures, also in the New Testament and I am pretty sure he is mentioned in the Koran. He is not therefore limited to only Christians in terms of which religions 'believe' in him (although, of course, not all Jews, Christians or Muslims will believe in him). Many religions probably have an idea of evil personified. Also, as a Christian I don't just think what I believe applies to me, that would be the hight of self absorption! But of course, respectfully, all are entitled to their own beliefs. As I said above, I don't want to de-rail the thread any further.