Enochian differs from Theban, Celestial, Malachim and Passing the River in a fundamental way: none of those four claim to be anything but a cipher of an existing language, however uncertain their specific origin, while Enochian is presented within its own tradition as a language received directly from angelic communication rather than composed or compiled by any human author. The Elizabethan mathematician and astrologer John Dee and his scryer Edward Kelley recorded an extensive series of spirit conferences beginning in 1582, documented in Dee's own diaries and later published records, in which they describe receiving the script, called variously Enochian, Angelical or Adamical, along with vocabulary and grammatical material, from entities they understood to be angels communicating through Kelley's visionary scrying.
The twenty-one letter script itself, along with the associated angelic Calls or Keys, tables of correspondences and a body of vocabulary, forms one of the most extensively documented episodes of claimed spirit communication from the period, precisely because Dee, a serious scholar with wide ranging scientific and mathematical interests, kept careful written records of the sessions rather than the material surviving only in later, less rigorously documented report.