If an angel tells you to do it, it's hard to resist
Visitors to Printed Page sometimes ask if we have any grimoires, or books of spells. We can trace the interest in such books to Britain's most famous occult philosopher, Dr. John Dee, who, in the 16th century, spent a career focused on establishing communication with angels. He sought to achieve this with the help of a scryer-- an intermediary who could gaze into a crystal ball to read spiritual responses to earthly questions. Dee's scryer was Edward Kelley, who operated under the name of Edward Talbot to disguise an unfortunate conviction for forgery. Through Kelley, Dee was finally able to to seek celestial help in interpreting a magical manuscript called "Book of Soyga." The book had 147 pages of incantations, astrological instructions, demonology, lists of lunar mansions, and the family trees of angels. Dee was obsessed with a part of the book that carried a square table of letters, 36 rows by 36 columns, all indecipherable.
Happily, Kelley managed to patch Dee through to the archangel Uriel, and Dee, who recorded the session in his diary, wasted no time grilling Uriel about the meaning of the tables. Alas, Uriel's response was disappointing. "Only the archangel Michael himself can interpret the book," he said through Kelley. Michael was unavailable.
It turned out that Kelley was less of an intermediary than a schemer, and revealed to Dee that an angel named Madimi had ordered Kelley and Dee to swap wives. Anguished by the command, Dee ceased any further spiritual conferences, but only after the swap meet. The two men parted ways in 1589.
-Source: "The Madman's Library," by Edward Brooke-Hitching