I grew up in a pretty strongly religious household, but I don't remember ever having any kind of religious themed dream. I think it was because I was not brought up fearing hell, or believing that god was in intricate all consuming part of my life. While that all consuming aspect is what my mom now believes, at the time I think things were lighter and as a result religion to me didn't really mean anything other than waking up early to go to Sunday school.
I find it interesting that I didn't have any dreams because for as long as I can remember, I have had vivid dreams almost every night most of which I can remember (to the point where I actually have trouble remembering what was real and what was just a dream). I never really thought about it before though. It makes me thinking that I was never really a true believer, or at the very least that god and religion never carried any emotional weight.