Deja Vu doesnt make you a prophet or mean it is any manifestation of the supernatural, i get it quite often and very strong myself as do lots of people.
http://en.wikipedia.org/wiki/D%C3%A9j%C3%A0_vu
Dreams within dreams can even contain deja vu making you wake up thinking you've dreamed a dream that came true, all kinds of crazy shit can go on in the mind, and that is exactly where it is all taking place.
You think you saw a (one per your 1st post in this thread) ghost aged 5, You claim you KNOW what you saw, ... you don't, you only know what you think you saw, you also vaguely claim dreams that come true as another supernatural experience as well.
You still believe in Satan, I assume you still believe in God, demons, angels, heaven, bible prophecy etc etc too. Thats is not a very good basis to formulate logical unbiased conclusions about the stuff you think you experience, you are almost guarenteed to seek an external explanation because of it. In fact you may well DESIRE the supernatural explanation of it as that might mean you are special somehow. Many take that road.