A term used by manipulative church leaders to demonize people (especially women) who display independent thought and self-confidence to act upon it instead of unquestioningly obeying the church leaders (often men). It's also used to shift blame to women for their own sexual harassments and assaults within toxic churches.
The term originated from one of the "villain" women of the Bible -- Jezebel, wife of King Ahab.
"Women will not wear pants, makeup, or jewelry in this church. They will be submissive. If anyone doesn't like this, they have a Jezebel Spirit."
"No wonder this happened! Look at what she was wearing. She has a Jezebel Spirit!"