Erich Bischoff's extensive study of the main works of Kabbalah, particularly the Zohar (of course in the original language), led him to a profound understanding of this incredibly complex material. The results of this work, which he has already laid out in the translations, explanations, and essays of his two-volume edition of "Elements of Kabbalah," also benefit this book. As a result, the content of this book is significantly more substantial, richer in depth, and more concrete. It presents Kabbalah in a detailed scientific manner, making it comprehensible for beginners as well as more accessible for advanced readers. Bischoff conveys the teachings of Kabbalah with considerably more fidelity and essence than many other authors. He emphasizes that practical Kabbalah pertains to its application in magic and the knowledge associated with it.