xxx: There is a clear protocol according to which a person is recognized as obsessed, not just mentally ill. For example, the obsessed person must speak a dead or little-known language. Only if a person meets all the criteria is called an exorcist. At the same time, not every priest has the right to exorcism - special preparation and blessing of the Pope of Rome is required.

yyy: I imagine a picture: a guy runs on the ceiling and walls, spells people with touch, brings human sacrifices to the glory of Satan, calls an exorcist, and the guy is like this: "London is the capital of Great Britain", and an exorcist: "Nahera you called me, he speaks in English, that is not obsessive!"