Possesion

[Hephaestus]

Hi, ive not got Roberts Book(s) and not really up to buying online yet, would try to get it ordered at the library but never get round to getting to the library due to things always cropping up,  but was wondering about this ive heard about Robert Bruce being possesd - can anyone direct me to an article about this (if one exists) because until I understand more about how it happened to him im scared about continueing my attempts at OOBE, I think theres something in my house and I dont want it taking me over.
People say you have to give permission to be possesed but if Robert was possesed without permission then that is a load of poop, lol.