The European Mysteries and Their Initiates
The Northern Mysteries were based upon the idea that when a number of men, each of whom has his particular task, are gathered together into a whole, an invisible influence will work in them, just as the soul works in a human body. When men come together in this way, each playing his own part, they form a kind of higher organism or body, and thus make it possible for a higher spiritual being to dwell among them. Thus Sieg gathered together a circle of twelve men, each of whom set out to develop the powers of his soul in a particular direction. And then, when they gathered together in their holy sanctuaries, they knew that a higher spiritual being was living among them as the soul lives in a human body, that their souls were members of a higher body. This was the sense in which the “Thirteenth” lived and moved among the Twelve who knew: We are twelve and the Thirteenth lives among us. Or else they chose out a Thirteenth whose function was then, within the circle of the Twelve, to be the connecting link enabling the higher influence to descend. And so the Thirteenth was recognised to be the representative of the Godhead in the sanctuaries of Initiation.