This book examines the influence of Gnostic philosophy on Jungian psychology as indicated by Jung´s essay, ´The Transcendent Function´ (1916), and his Gnostic-inspired treatise, The Seven Sermons to the Dead (also written in 1916). Relevant and timely due to the relatively recent publication of Jung´s The Red Book, the hypothesis of this work is that the Seven Sermons is the mythopoetic, metaphysical twin of ´The Transcendent Function´ and that these texts can be considered as two sides of the same coin. The Seven Sermons formed a prelude to everything Jung was to communicate about the unconscious-in other words, an embryonic form of the principal tenets of analytical psychology can be found in a Gnostic-inspired text.As Gnostic philosophy was the inspiration for both texts, this book also highlights correspondences between both of Jung´s works and the Gnostic texts of the Nag Hammadi Library, paying particular attention to the theme of the opposites-arguably the crucial theme at the very heart of Jung´s psychology. Accompanying an analysis of these texts is an experiential investigation of the influence the topic had on the occurrence of the transcendent function in the author´s dreams, the intention of which is to provide a richer description of the experience of the transcendent function and to facilitate a deeper understanding of the topic.