This work is the magnum opus of Abraham Abulafia, founder of prophetic Kabbalah. Written in Sicily in 1286 as a wide-ranging commentary on the Book of Formation, the book synthesizes ecstatic meditation, sacred linguistics, cosmological speculation, and practical mysticism. Nowhere else does Abulafia develop his ideas in such depth, from the manipulation of divine Names and Hebrew letters to soul dynamics, astrological cycles, and theurgy. Uniquely among kabbalistic works, it includes a sustained treatment of Golem creation, situating the text as both a mystical encyclopedia and a guide to esoteric practice. This edition presents the work in English for the first time, making it accessible to scholars, practitioners, and students of Jewish mysticism.