Eberron: Dawn of Heroes
These fanatics call themselves Blades, and they view their charismatic leader as more than just a prophet. To them, he is a divine presence. Their worship sustains him, and in return, he provides them with a sense of purpose and inner strength.
The Blades are not a typical faith, for they place no special value on spiritual existence. They waste no time on questions about the nature of souls and whether warforged have them; they have awareness and freewill, which is enough. They see no purpose to imagining spiritual energy that comes from a distant god; they receive a tangible benefit from proximity to their leader and increase his power by their own obedience.