Having a mood disorder can feel a lot like being “possessed.” Biblical narratives (i.e. the Gadarene demoniacs) connect possession to mental illness.
Indeed, when a person is taken up by the storms of chaos occurring in mental chemistry, it would seem that they are taken over by a force outside of their control.
A “demon” (albeit metaphorical or (meta)physical) enters the soul and directs it like a puppeteer a string puppet. For those who have a familial relationship or connection to the one affected, the hardest part can be parsing the person from the illness.
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