Shaarei Kedusha is Chaim Vital's attempt to recover a lost tradition: the practical path by which the ancient Perushim — those who withdrew from the world into Torah and contemplation — attained the Holy Spirit and prophesied. Their names survived; their methods did not. Vital organized the recovery into four parts: an ethics of preparation, a theology of the soul's damage through sin, a theoretical account of the grades of prophecy, and finally a practical guide to the techniques themselves. That fourth part was suppressed in manuscript transmission for centuries, withheld on the grounds Vital himself states in his preface: the material is dangerous, discernment is as essential as technique, and most attempts at invoking angelic intermediaries produce only contaminated results. This edition restores it in full for the first time, accompanied by a critical introduction that identifies its twenty source-texts, reconstructs the operative logic distributed across them, and engages seriously with the question of what Vital's mechanics of altered spiritual perception correspond to in the broader history of human consciousness. A landmark text, fully restored and rigorously introduced.