The Brotherhood of Faith is a relatively new religion that has sprouted up in Leon and the surrounding area. A representative of this faith in Leon is Brother Ian.
Conversations with Brother Ian have revealed this faith believes that a special ritual needs to be performed after garnering enough followers in order to awaken their Goddess, the Seer, who is the Goddess of all creation. Brother Ian told you that you can learn more about joining the faith in their Monastery in Darkwater Crossing, from The Father