As the precessional cycle transits from Pisces to Aquarius, great shifts in spiritual evolution are on the horizon--not for all of humanity as many in the New Age movement have generously hypothesized but for those who have undertaken the necessary spiritual preparation and initiatory work. Drawing from his deep immersion in the Mystery traditions of both East and West, author J. S. Gordon investigates the initiatic path from ancient times to modern day, detailing the step-by-step process of initiation and the sequence from spiritual aspirant to the highest Adeptship. He explains the natural logic and characteristics of each stage of initiation, including the associated problems and psychological issues that need to be faced in order to move forward to the next stage. He shows how humanity is naturally inclined to spiritual evolution and the development of higher consciousness. We are part of the overall evolutionary process of Nature, a system guided by the most highly evolved Adepts and extending beyond Earth to the entire kosmos. Exploring the long history of the Mystery schools beginning with ancient Egypt, Babylonia, and India, Gordon examines the sacred metaphors and allegories of esoteric philosophy, metaphysics, occult science, and the Science of the Seven Rays as well as the Adept-inspired theosophical works of H. P. Blavatsky and A. A. Bailey. He looks at the Adept Hierarchy of the Great White Himalayan Brotherhood and considers in detail two much-discussed mysteries: The Jesus-as-Christ mystery and the Maitreya-Buddha mystery. Revealing how advancement--spiritual, scientific, and cultural--erupts out of tension, he explains how the Adepts have been increasing local and global tensions to prepare humanity for the Age of Aquarius, thereby creating the ideal preconditions for spiritual evolution and an eventual restoration of the Mysteries in our own modern era.