Eclecticdealer wrote: What if the Demon / bad spirit isn't Christian? How does one perform an exorcism without that knowledge?
Yup, this popped into my head while taking a shower
One word of caution I would have to put out there for all those or any who try to advocate the use of Prayer or the Christian faith to ward off any spirits or "Demons". If you look in any Christian text, it will show that one of the primary factors which allows an exorcism or the texts which give men the power over demons to work is the fact that the person claiming or using this power is acting as an advocate or emissary of god. And that he or she has the faith, belief, and purity which the christian faith gives. And that using the texts, scriptures, or exorcism without having the faith to do so, is like using a paper sword to ward off an army. Ineffective at best, and perhaps ticking off the spirit/demon/etc at worst.
I personally am more of the belief that there are fewer creatures out there which are demons, and perhaps more just plain evil people who have passed. If someone bears no love for people in life, and spends their life stepping on people. Then I think they in turn will not suddenly see the error of their ways in death, but rather be the same after passing.
Just my thoughts.