…..The manuscript itself may well fit into the Solomonic cycle of magical Grimoires as it is chiefly influenced by Agrippas Three Books of Occult Philosophy (where the author has used the Passing the River script found in Agrippas book) and by the Heptameron, which contains conjuration spells that are similar to the ones found in the present manuscript. There are also signs of influence, or at least evidence that the author had access to,other texts includingThe Grimoire of Pope Honorius and The Sixth and Seventh Book of Moses, both of which appear to be the source for the particular spellings of the names of Demon Kings used in the Clavis, indeed the use the word Clavis itself points the Solomonic cycle. Thus confirming that this is a classic grimoire for that tradition.
Excerpt of the essey On Metatron by JCB.
This book is intriguing not only because of the mystical feeling one gets when looking upon the illustrations, symbols, text and glyphs so richly inscribed upon its pages, but also because of its captivating title: Clavis Inferni sive magia alba et nigra approbata Metratona, which translates to Key of Hell with White and Black Magic approved by Metatron. By this title, the author clearly states that the workings of magical practice herein, with their formulas and words of magical significance, have had their effectiveness tested and proven under the supervision and with the blessings of none other than the archangel Metatron himself.
According to the Babylonian Talmud, Metatron is the highest-ranking angel and the supreme ruler over all who reside upon our Earthly material plane as well as over those in the Heavenly realm. As such, he is the angel closest to God and is closely associated with God as the Lesser YHVH. In the Kabbalah, Metatron is named the ruler of Kether (the Crown), the first and highest Sephirah of the Tree of Life, representing Heaven or Paradise, with its associated planetary body being Pluto. The lowest Sephirah, Malkuth, representing the material, Earthly realm the furthest from Heaven and positioned at the bottom of the Tree of Life, is represented by planet Earth and is ruled by Metatrons twin brother, Sandalphon……..