Although I do tend to be one of the "go-to" guys for '80s and '90s RPGs here, this is one I've never even heard of, let alone played. That's unusual for me. So, unfortunately I can't help with this question.
Call me a necromancer, because i'm reviving a dead thread. I used to play this in grade school. The gameplay is similar to Final Fantasy 7, but it does mix some things up. I can't recall any overtly christian themes, but I may just not have been looking for them back then. I'd have play through this again.