First post, and jumping in the deep end here but...
arent we spirits in a physical vessel of sorts, meaning there must be a way to let go or partially let go. so given the general lack of spirituality that apears to exist in the world of today, would it not be safe to assume that those people who are more ignorant of there current state, might be easily influenced by spirits who do not have a vessel of there own?
the evil one is noted in scripture many times as having the ability to "tempt" us , if we arent watching then who knows how far he would be able to go with such an ability.
as for mental illness, i would imagine it is a combination of external spiritual influences, and our weaknesses as we might succumb to the "natural man". The human brain as far as i see it is an intermediatory computer designed to make the physical plane easyer to manage for our spiritual selves. The more you let your brain take controll the less your spirit is in controll. Obviously there are many many "programs" in the brain and our own controll over each of them would be different for each.
so yeah...
hi lol