What I’m going to say may sound strange to those who have been Christians all their lives. For roughly 15years, I practiced various forms of magic, starting with Wicca, then going on to Thelemic Magic, and finally to Setian Magic. In all of these “religions”, there is a practice called evocation, where one summons a demonic entity, traps it in a black mirror, and communicates with it. I have done this many times, and it is quite startling at first. There is also a higher practice called invocation, where one opens him/herself up and lets one of these demons possess them. I did this for many years. I always invoked the Egyptian God Set, who is none other than Satan.
I was part of an organization that followed “Set”, and foolishly believed everything he said. He claimed that the Christian God was nothing more than a fairy tale, and that HE was the Creator of the Universe. He taught an elaborate cosmology and philosophy. It wasn’t until Jesus rescued me that I realized that “Set” is the Father of Lies (I had never read the Bible before, and did not know this). In my humble opinion, the Devil and his demons roam the earth, creating as much havoc and misery as they can. None of them are good, or they would still be Holy Angels. Their only purpose is to drag as many unsuspecting people to Hell with them as they can. I believe that they will all be judged for this abominable behavior, just as the Bible says.
I know that a number of modern Christians don’t believe in the literal existence of demons, but I assure you, they are VERY real. We should always be on guard, and pray for deliverance from their subtle influences on us.