Jung's use of Kabbalistic symbols and ideas as well as his personal Kabbalistic vision are critically examined. It is argued that as great as Jung's acknowledged affinity is to the Kabbalah, his unacknowledged relationship was even greater. Jung has been accused of being a contemporary Gnostic; however, the interpretations Jung placed on Gnosticism and the texts Jung referred to on alchemy were profoundly Kabbalistic, so much so that one would be more justified in calling the Jung of the Mysterium Coniunctionis and other late works a Kabbalist in contemporary guise. Although Jung, at least during the 1930s, appears to have had powerful motives that limited his receptivity to Jewish ideas, his highly ambivalent and at times reproachable attitude toward Judaism should not prevent one from appreciating the affinities between Jungian psychology and Jewish mystical thought.