Commission from The-Angel-of-Angels of Odon taking a sacrifice. Original at http://www.furaffinity.net/view/14708211/ Go comment there!
This came out very nice; there are two versions, this one and another, which shows the priests entirely nude. I'm actually not sure which I prefer. Nude version: http://www.furaffinity.net/view/14716443/
This is a good reason not to worship demon snakes, though. Of course, the one fellow in the lower left seems to be wanting to be next, silly mortal.