How do you cast out devils?

Answer 1

Exorcism is a practice that claims to drive evil spirits or demons out of a person, to relieve alleged symptoms of mental illnesses or other unusual behaviour. However, we now know conclusively that mental illnesses and unusual behaviour are not caused by devils. Belief in possession by evil spirits has not entirely died out and a few people sometimes still take part in "exorcisms", whether for entertainment, financial gain or out of misplaced piety. However, no one can exorcise demons because possession by demons does not exist.

Rituals of exorcism, when undertaken in a misguided attempt to assist a mentally ill person, are dangerous - not because demons exist, but because proper medical help is delayed. Rituals of exorcism, if undertaken in a misguided attempt to force a vulnerable person to return to a religious community, would be a gross violation of human rights.

In summary, there is no way to cast out devils or demons, and you should not participate in 'exorcisms'.