While researching a recent project, I came across this account of a Jewish exorcism ritual and noted how different it is from the Catholic ceremony.
The article also talks about “Dybbuks” the Jewish version of other worldly creatures. Finding out the cultural and religious beliefs a character has been exposed to can yield rich character insights and plot twists. The notion of a Jewish exorcism intrigued me, but after reading the article, I was surprised that there were no lawyers involved!
As an exercise:
Consider which religious/spiritual ceremony could/does factor into your story. Is there a wedding? A funeral? An exorcism? Take a moment to consider if it was a ceremony from a different religion? How would it be the same/different?