If they abide by their religion, yes.
HA HA! I have come across some real religious nuts in my time. You know what I found? They were the WORST when it came to being honest and are even downright rude. Even the kids that my son hangs around with, one is from a very religious background. His mom had me on the phone one night telling me his father is a preacher. I said really? because one of my neighbors complained to me that they heard your son swearing his head off on my street. She said what? my Johnathon? I said yes and I have personally heard him. She said well he knows better I am surprised because his father is a preacher.
Funny thing is, even though this kid swears, I have never heard my son swear or had anybody tell me he is out and about swearing. Again we aren't religious, so I throw your theory out the window.