I think this was made for HBO during a time of huge scandals in televangelism. It has the same consistency of an HBO movie: unsubtle, poorly acted, and generic. It's not a bad movie, especially for that origin. However, when a director like Anderson has directed it, I expected a little better. The direction is so bad, though, it's truly, truly embarrassing. The film is about a failing evangelist who hires a sexy singer to spice up his services. She steals the show from him. I don't know, I couldn't finish it. Like I said, it's not awful, but I just figured that life was too short to watch something so unaccomplished. Plus, Christian rock, which is abundant in the film, is the second worst genre of music on the planet, right after Christian ska.
P.S. If you're looking for this, it actually has been on VHS before, despite what previous comments have said. Orion put it out. I found it in my library system. But, really, you don't want to see this, at least if you're a fan of Lindsay Anderson. Only if you're a completist, but it's just an embarrassment.