According to temple tradition, the pantheon began when the First Hearth appeared in the darkness before creation. Aureon shaped its flame into law, Selene gave it mystery, Neris cooled its embers into rivers, and the remaining gods emerged from sparks cast into the forming world. Heretical traditions claim the gods were once mortal heroes who ascended by binding their souls to the Hearth.

The world rests upon the First Hearth, kindled by Aureon and cooled by Selene. From its sparks arose the twelve divine powers, each embodying a necessary tension in mortal existence. The gods dwell in realms connected by the Celestial Road, but every deity maintains a physical presence, shrine, omen, champion, or avatar in the mortal world. No god is wholly sovereign: each depends upon the choices, prayers, stories, and defiance of mortals.

The Concord of Twelve Fires has no single supreme priesthood. Instead, twelve major traditions maintain their own temples, rites, clergy, and sacred laws, while the Concordant Council gathers representatives from all twelve once each year. Aureon's High Justicar presides over disputes, but Selene's Dream-Speaker may veto decisions that threaten mortal freedom. Local communities commonly blend deities: a harbor may honor Neris, Veyra, and Seraphel, while a frontier village invokes Varkun, Ilyra, and Thessa. Rival sects, mystery cults, knightly orders, merchant houses, healer circles, and revolutionary cells all interpret the gods differently.

The gods are actively involved in mortal affairs through omens, dreams, miracles, avatars, chosen champions, sacred relics, and competing temples. Clerics and paladins may serve a single deity, a divine principle shared by several gods, or a local syncretic tradition. Temples function as courts, hospitals, guilds, archives, fortresses, theaters, farms, and safe houses. The gods reward initiative and interpretation rather than blind obedience, and mortal heroes can alter divine relationships through quests, treaties, betrayals, and the destruction or restoration of holy sites.

The dead cross the River of Names, where Neris weighs the memories they shaped in mortal lives. The worthy join the Halls of Echoes, serving beside the deity whose virtues they embodied; the restless become river-lights until mortals remember them. Souls claimed by Varkun are forged into eternal guardians, while those judged oathless by Maelith are scattered into the storm beyond the world.