Frazer was so fascinated by this image of the kingship of the priest of Nemi that he started looking around for parallels to it, and the result was the whole Golden Bough.
Edinger identifies the priest of Nemi's perpetual mortal vigilance as the generative nucleus from which Frazer's entire comparative mythology radiated, framing the Golden Bough as psychologically motivated inquiry into the killing of kings.
, The Mysterium Lectures: A Journey Through C.G. Jung's Mysterium Coniunctionis, 1995thesis