I'm more of an inquirer than believer, and there isn't much I can say on that. But one of the creepy experiences I had was back when I began practicing the Kabbalah. Long story short, while dreaming (but the logical part of my brain had woken up) I saw the Qabalistic Tree of Life with "Jehovah" (who I sensed was a lie) tried to make me feel guilty for past lives, which I said was ridiculous, not what I experienced, it was pointless (you can't learn if you can't remember) along with the more naturalistic view of karma (which isn't a system of rewards and punishment, but a social force as impersonal as gravity). It tried to hold me prisoner and I fought back. I felt its weight on me and I was choking, but I fought back until I came awake frightened and gasping.
I went to email someone right away about it and found a strange email from someone called DarkSun666. Despite the Satanic sounding name, the email was something about how Jesus would defeat me. I never heard of this person (I see there's one on twitter, but it's probably not the same person). That this complete stranger sent me this right after such a lucid nightmare made it all the more creepy.
The ones trying to get me to practice the Kabbalah were disappointed that I was quitting that path, saying it was not for me. They said that I encountered a "dybbuk" and should not let it discourage me. But as I had my own practices that worked for me and felt no affinity for the Judeo-Christian religions, I stopped those practices.
I still don't know what to make of that experience. While I think it was at least a little paranormal, some theories I entertain about what caused that experience is that early childhood experiences (and learning not to trust authority figures but gaining self-confidence to take care of myself, so my experience is that prayers are bad luck for me while using creative magic of my own inspiration works well, which I believe is because of a specific instance in early childhood, and had circumstances been different then it might be the opposite for me today, and I might've had a much more positive experience with the Kabbalah). But ultimately I don't know.