This is the church you want to play in:
I've played bass and ran sound in a church before (not that one), it was quite a positive experience. That was the time when I would jump on almost any opportunity to log more bass playing/sound running experience, the more diverse the better. Good people, talented and experienced musicians (some even holding performance degrees), big great sounding room, luxurious backline, fairly interesting music. I was happy to make a positive contribution and learn from the experience, the band was happy to have a decent and easy going sub, so much so that even after their regular bassist came back I had an open invitation to sit in on percussion anytime.
We had an explicit mutual understanding as far a godly things went: I did what I did in with courtesy and professionalism, and I was free to exit before the non-musical part began and not participate in church-related conversations nor listen to the lyrics. There was no money involved, only coffee and doughnuts.
Cannot remember what brand of church it was, the connection was made randomly through a friend who introduced me to one of their band members. I offered, they happily accepted, that was it.