Personal religious beliefs among FE'ers is fine, but the society should be strongly agnostic. Any reference to religion, beyond as a historical curiosity, would only serve to solidify in people's minds the image of FE'ers as stubborn religious crazies.
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After re-reading your post, I realize that I'm assuming you're talking about religion as it pertains to FET. If that's not the case, we already have a philosophy, religion, and society board. It's called philosophy, religion, and society. You should absolutely feel free to have discussions of Christianity and the Bible there.