#fjkdshfjkshdjfkhsdk

We know a bit about the tenants and beliefs but not a Lot :D

From The Book Of Seiros , Part V codex entry:

The Five Eternal Commandments ● Dare not doubt or deny the power or existence of the goddess. ● Dare not speak the goddess’s name in vain.

● Dare not disrespect your father, mother, or any who serve the goddess. ● Dare not abuse the power gifted to you by the goddess. ● Dare not kill, harm, lie, or steal, unless such acts are committed by the will of the goddess

The goddess cares for and protects all that is beautiful in this world. The goddess will never deny the splendors of love affection, joy, peace, faith, kindness, temperance, modesty, or patience. Follow her example and, in doing so, abide her laws.

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Rhea speaks about how to turn a sword against the Church is akin to pointing a sword at the Goddess herself, and while this seems a plausible part of the dogma she’s written, it also can just be her trauma speaking since the tenants we have don’t Technically state so, so take that as you will. The closest we’d have to her statement being supported would be the fact that killing is okay if the goddess wills it, and ur not allows to disrespect any who serve the goddess. 

Lorenz also implies that the teachings of Seiros encourage limited interaction w foreign nations (specifcally isolationism) and while this IS a plausible thing for Rhea to include as she fears conflict, Claude also contests this reading. So we aren’t really sure if this was a “Fodlan is just being racist and using religion as a blugeoning tool to excuse that” or “theres some abiguity to how the tenants were written that COULD give off that impression”