There's a 50+ year literature out there by actual practitioners, who have cleansed spirits from "mentally insane" with resulting "miracle cures". I personally have over half a dozen books on it, from various countries, from various decades, and from various practices (catholic, non denominational, buddhist, etc).
Mostly, as an over-simplification, it's about tricking the possessing spirit to leave the possessed person, and then patching up the protection around the new UN-possessed person, as to stop further re-possessions.
How was the spiritual cleansing accomplished?
Many different ways, not all Christian, but some are. Read the examples:
https://www.amazon.com/dp/0359783368/
https://www.amazon.com/dp/0983429405/
https://www.amazon.com/dp/B0C12JXVBJ/
https://www.amazon.com/dp/0345460871/
There's a 50+ year literature out there by actual practitioners, who have cleansed spirits from "mentally insane" with resulting "miracle cures". I personally have over half a dozen books on it, from various countries, from various decades, and from various practices (catholic, non denominational, buddhist, etc).
Mostly, as an over-simplification, it's about tricking the possessing spirit to leave the possessed person, and then patching up the protection around the new UN-possessed person, as to stop further re-possessions.
The techniques vary, but that's the meta of it.