The 72 names of God, from which the 72 Angels of the Christian and occult Kabbalah are derived, have always stirred the imagination of magi and occultists. 72 is without doubt one of the most mysterious numbers of the Kabbalah, as it makes direct reference to the Shemhamphorasch (Explicit name), Hebrew time and cycles. This number is the cornerstone of the Kabbalist system. With the knowledge of its secret, Moses parted the Red Sea, the High Priest, equipped with pectorals, approached the Ark of the Covenant to question it, The Wise men penetrated the mysteries of time and spheres and mystics reached ecstasy. Georges LAHY explains the fundamental role of the seventy-two forces, from the going out of Egypt to the mystic Kabbalah, via the Temple of Jerusalem. In this respect he draws on reference texts such as the Talmud, the Sefer ha-Zohar, the Sefer haBahir and the Sefer Raziel. The 72 Names are detailed to offer a better understanding of the help that knowledge of these 72 Powers can offer each of us. The third part of the book is an initiation to the mystic Kabbalah, through the teachings on the Shemhamphorasch, by the Spanish Kabbalist: Abraham Abulafia (13th Century).