Oh, they're not very complicated. Thesa is the great moon god, who brought life and love to El Nysa.

[ So far so good, right? Nice and simple, a pretty typical sort of moon goddess, really. And not even that hard to understand; certainly a made up construct, considering that Cain knows that the true "goddess" of Thesa is Darma — and that the Thesa the Olympians worship is a collection of legends and creation tales. It's certainly easier to deal with than a primal beast. Usually that involves having to go beat up a huge monster, he much prefers this sort of thing!

So really, Frederick should have no complaints about anything he has to preach! ]

Mostly you encourage people to embrace unity, love each other, and go out and procreate.