I myself am one of those "Christian Ghost Hunters". I grew up in a home that was demonically infested. You can see some of my families story at this you tube clip.
‪A Haunting: Hell House‬‏ - YouTube The full video is there as well if you look up "A Haunting Hell House" on Youtube.
Levitations were common, having things thrown at you when you are in a room all alone etc were very common.
Never the less, I was scratched, shoved, and taunted for many years as was the rest of my family as well. During the latter years, we decided to get Paranormal investigators involved (Lorraine and Ed Warren, and John Zaffis) who conducted an investigation on our home and found all sorts of evidence. At this time I was not a Christian.
One of the things they suggested is to have a medium come into the home. We did this and she (the medium) became possessed and VERY violent. She busted the chair she was strapped tightly too, Pushed Ed Warren and 3 other men who were sitting across the table all into a wall at the same time with ease.
After seeing this, the Warrens decided it was time to bring in a priest to perform an exorcism of the home. Bishop Robert McKenna (Chief Exorcist in the USA for the Catholic Church) of the Our Lady of the Rosary Chapel performed the rite of exorcism on the home. It would calm it down, but would then resume with more force. After 8 exorcisms it was weakened enough for us to be able to leave.
I began to do research into the paranormal myself and the origins of demons, and there began my introduction to the Bible. I became active in paranormal investigations and studying the Bible on the subject of demonology.
A few years later, I moved to NC and the demonic oppression started again. I hot rock bottom in my life, and didnt know where else to turn. One day, I was in a store and met a man who was covered in tattoos (Much like myself). He began talking to me and immediately I felt a connection with him. I poured my heart out to this man, and found out that he was a former satanist, who was now an ordained minister. HE shared the Gosple of Jesus to me right there. I went home and fell apart. I asked God to "SHOW ME THAT HE WAS REAL". He then said to me clear as day, "THE DEMONS THAT YOU SEE, THIS DAY YOU SHALL HAVE AUTHORITY OVER THEM." I opened my Bible up and the pages fell to Luke 10:19. " I give you power and authority to trample on snakes and scorpions and over all the power of the enemy and nothing shall harm you." I accepted Jesus as my savior (for real this time, as times earlier I mouthed the words with no heart). That evening I was faced with a demonic presence. I did what the Apostles of the NT did. I cast them out in Jesus name. IT WORKED!!!!!!
The next day, I went to the church of the man I met at the store. This began a 6 year discipleship in deliverance, and eventually to my ordination. I began not only operating a very successful public deliverance ministry, but one under the cover of a Paranormal investigation team as well. I traveled the east coast helping others receive deliverance, and leading them to Christ. This opened up avenues of Evangelism, and eventually leading me to Pastoral Staff at my mentors church.
Today, I live in New England and continue to operate in the ministry of deliverance, as well as evangelism, and pastor a street church called Deliverance Bible Fellowship.
This is very real. There is a ministry for this! I am part of that. I have witnessed many people come to Christ through this. I have enclosed a cpl of pics of encounters I have had.
These pics are from Deliverance sessions I have done, An investigation in a "Haunted" home with ZERO power on, as well as an investigation at a cemetery that witches were holding a circle in. Hairy night, but Jesus is Supreme!
Do I think that there are "ghosts" as human spirits walking the earth. NOPE! Its contrary to scripture. Demons? Most def!!!!!