S.L. MacGregor Mathers 
The Kabbalah Unveiled [PDF ebook] 

The Kabbalah is an esoteric Jewish doctrine adapted by author S.L. Mac Gregor Mathers to form the Hermetic order of the Golden Dawn, an occult organisation. This volume includes three of the critical books from the Zohar, the fundamental work in Kabbalah, as well as Mathers” introduction explaining the key elements of Jewish mysticism. Mathers” translation from Hebrew originally appeared in 1926, and it continues to be a valuable resource for students interested in Religious Studies, particularly Mysticism and the Occult.