I think Martha divorcing John in 1979, John's marriage to Marilyn in 1980, Marilyn's presence and comments when John was bringing the word, the control factor starting in the fellowship around 1980, like you described, the only thing I can think of is, a what if, that is what comes to mind,,,,,What if the biblical, historical Jezebel, had of divorced her husband, I think his name was
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Former Cult Members and Affected Families