Disturbing BoS I was give

It is quite possible that what dear ol' grandad was writing about
was his experiences not only in the Ether world but also the world within himself...His soul.Sounds to me that he was describing personal demons as well as spiritual ones.Self doubt had been planted in his mind & had begun to torment& unhinge his mind.

Just my opinion...

Stay safe as the BOS may be even enchanted to further inflict pain on the unaware who read the book.