It is very possible to get an impostor impersonating a guide. This is great fun for the stalled 3D jokers. It is very useful to vet any being that contacts us. It is quick & easy to do. Real possession is much more extreme & not very common.
There is no need to be fearful at all or have any anxiety about being contacted by troublemaker spirits. Although organized religion has worked long & hard for millennia to convince us that we are powerless, this is disinformation. Positive energies are always stronger than negative ones.
Vetting Nonphysical Entities-
http://www.spiritualforums.com/vb/sh...d=1#post156097
Negative Spirits Or Just Our Imagination-
http://www.spiritualforums.com/vb/sh...ad.php?t=19290