Book excerpt: This book features detailed analysis of an ancient secret scroll from the Middle East known as the Rivers Scroll or Diwan Nahrawatha, providing valuable insight into the Gnostic Mandaean religion. This important scroll offers a window of understanding into the Mandaean tradition, with its intricate worldview, ritual life, mysticism and esoteric qualities, as well as intriguing art. The text of the Rivers Scroll and its artistic symbolism have never before been properly analyzed and interpreted, and the significance of the document has been lost in scholarship. This study includes key segments translated into English for the first time and gives the scroll the worthy place it deserves in the history of the Mandaean tradition. It will be of interest to scholars of Gnosticism, religious studies, archaeology and Semitic languages.