The bible is also full of stories of ghosts, demons, possession and Jesus exorcising them, by example driving these evil spirits into pigs. I had a christian friend, who explained her psychosis as having been possessed by a ghost and continues to believe in them. Psychologically I find this concept problematic. Instead of accepting these phantasies as the own unconcious, they get externalised, which is also the mechanism of paranoid psychosis. It certainly will bring relief, but might worsen prognosis and the way back.