Vorinismo
Vorinism is the primary religion in Alethkar, Jah Keved, and Karbranth. It is less common the further west you travel in Roshar, and both the people of the Purelake and Shinovar have their own unique religion.
Devotaries
The devotaries and the different sects of Vorinism that a person may dedicate their life to. The devotary a person chooses does not have to correspond to a person's Calling, but it is encouraged, to expand the growth of a person's talents.
Purity
The Devotary of Purity is dedicated to wholesomeness and honesty. Members of this devotary are expected to keep their thoughts and actions 'pure'. A member's talents are expected to be dedicated to purity as well, such as an artist depicting only things like the Heralds.
Sincerity
The Devotary of Sincerity are dedicated to seeking truth in all things. Members believe that there is always something to learn, and everything is subject to scrutiny, even their own religion. No question is rebuked. It is the smallest devotary.