PsychoYoshi has laid forth some General Rules (http://www.nsfcd.com/forums/index.php?topic=31273.0) involving posting religious material. While the thread is on Serious Discussion, the religion policy will carry on to Power On.
Please note that you need to post in that thread in order to be allowed to post religious material. Any violation of the policies will result in Bane of Serious Discussion.
Keep in mind, however, that lighthearted and good-natured religious/racial/blahblahblah cracks are allowed, unlike in Serious Discussion. You also don't need to sign the thread for these, obviously.
Any serious religious or otherwise controversial discussion needs to be signed for, though.