The religion is centered around a pretty complex and expansive pantheon in which all gods are worshipped as facets of reality, yet individuals and regions have their chosen avatars/lords/higher gods. There's a whole system of interesting rivalries and politics within the pantheon, and my actual Fantasy novel had a number of other pantheons, including the Skyborn (Lovecraftian horrors, very fun stuff) which I imported into my Scifi as the primary baddies.
I'll post more when I get back from the gym. I literally had thousands of paragraphs of material on this stuff.