The One is the primal spirit of the universe. The One shaped the Material, for as the spirit goes so does the dust. The One is behind everything.
Every spirit, from a mighty dragon god to a low rock, is split off from The One at one point. From The One came the Many. The first are the Over-Spirits. These important spirits often split themselves up into lesser spirits, so they can lean and experience more; some of the overspirit’s spirits split up to be lesser spirits, and so on. As each spirit learns and experiences, it merges back into its higher self… so that self can experience the universe it created properly. To learn and experience, each spirit must lose some of its Oneness and its omni-knowing. Binding to the material world blocks some of this. It is most spirits duty to relearn these things lost so they can rejoin The One.
Unfortunately, some spirits gets lost… trapped in the material. They lose their purpose and their way. This is agains the wishes of The One, who morns the loss of its wayward spirits.
The Priesthood of The One waunder about the world, trying to divorce themselves of the material. Those who have the calling are those who feel the duty to relearn the spirit. They then try to pass the mysteries of the spirit on to others, in the forms of stories and riddles. They also provide advice on how best to achieve ones purpose, to work with the flow of cosmic forces/ spiritual energies, and to achieve happiness.