"The Divine Mystery" is a detailed treatise on Incubi and Succubi, maleficent entities that feed on their prey through sexual intercourse. It includes instructions on how to contact them and chapters on the human soul, the afterlife, the universe, and much more. With heavy reference to the Bible, this fascinating volume explores the biblical concepts of demons, "Elementals", and gods in great detail, making it highly recommended for those with an interest in demonology and the supernatural. Reuben Swinburne Clymer (1878 - 1966) was an American occultist and Rosicrucian. He was responsible creating one of the oldest Rosicrucian organizations in the America, the Fraternitas Rosae Crucis. Many vintage books such as this are becoming increasingly scarce and expensive. We are republishing this volume now in an affordable, modern, high-quality edition complete with the original text and artwork.