This well-researched work returns us to the earliest known forms of religion and nature worship to show how our modern religions formed and where they really came from. It also brings us into modern times, reviving and supporting the important work of John Marco Allegro. This book reveals how natural entheogens, including the Amanita muscaria mushroom, were used by those seeking higher consciousness and an authentic religious experience. A must read for researchers investigating the origins of religion and the symbology used by the modern religions of today. Includes an extensive bibliography, 185 illustrations and over 500 footnotes.