It was because of a friend, Ken Alexander, originally from Ypsilanti, MI. He had a volatile childhood that led him to a pretty long sentence at Michigan Reformatory in Ionia. A special parole got him out after five years.
Reason; he'd say it was "Victory In Jesus." He got me to go inside with him when he was asked to give his testimony at a special chapel service where he did his time.
We just kept going back in as in-prison volunteers. First, it was that prison, then another, then another, another and several more after that. That's why I was in prison.