To add to my post that I posted earlier.
From the words of ED Warren:
"One of the main reasons for ghosthunting is to have encounters with ghosts. Sometimes however, the hunter can become the hunted. Graveyards are notorious for harboring ghosts. Are they the spirits of the dead that are buried there? Some spirits will remain in close proximity to their earthly remains in the hope they can re-enter that physical body and use it in the same way they did in life. Unfortunately, they cannot do this unless they are what we refer to as the "undead", the "sorcerer", the "Black Magician".
The man who hunts tigers at times has found that the tiger backtracks and is now hunting the hunter. The same is true with spirits. Graveyards are spawning places for evil spirits. Most of these spirits are inhuman (diabolical). They are drawn to areas where human suffering has occurred. These areas are full of vibrations of the tormented people who have lost their loved ones, and the unfortunate human spirits that are earthbound hover close to their remains. Evil spirits revel in the deterioration of human bodies; those bodies which God created. They are the dangers in the exploration of evidence that we, the living, must encounter.
We must be extremely careful of not becoming the hunted. How do we accomplish this? By using the knowledge that the enlightened ghosthunter must know. The enlightened ghosthunter envisions himself in a bright white glowing "Christ light" of protection before he or she ever enters any known haunted area or house. He or she asks for the protection of God and all that is angelic. But remember that these protective measures are only as effective and as powerful as the ghosthunter's belief in them.
New truths, new discoveries, can sometimes only be found through dangerous encounters. We as hunters of ghosts are visible. We are tangible. We are vulnerable. The ghost has the upper hand for it can see what we do not, it can hear what we cannot. It can perform feats we cannot. The ghost can come to us any time it wants. It strikes when the time is most opportune for it to do so (usually the psychic hours of the night between 9:00 P.M. and 6 A.M.).
So, if you want to hunt ghosts you must know your opponent. You must respect its powers. The person who makes statement's such as "I'm not afraid of ghosts", had better think twice about encountering one. Knowledge is a weapon but remember- fools rush in where wise men fear to tread. Don't be a fool. Be a survivor and an intelligent researcher. Help those who are in the spirit world (earth bound spirits). Help the living reach a better understanding of that supernatural world we will all enter some day.
I have been in this work of exploration for more years than I care to remember. I am happy to say I still am. It has been exciting, frightening, and even funny at times but it has never been boring. So I continue to explore, to delve, to research. I am happy in the knowledge that I have found the secret of life. It is that we survive what many believe to be the end, when in reality it is just the beginning. "