One of the great currents in the history of spiritual exploration leads back to John Dee, and his so-called Enochian system of magic. Dee was one of the leading scientists and occultists of his age. In 1582 he undertook a series of “Mystical Experiments.” Two of Dee’s key sources, The Sworn Book of Honorius ”, and the Summa Sacre Magice are intimately connected, since the latter draws extensively on the former. The latter text, compiled by Berengar Ganell in 1346 CE, encapsulates a different version of the former; in some ways it represents an earlier version. Dee quickly became convinced that he was communicating with supernatural creatures, and sought their help in resolving the differences, leading to a whole new system. The biggest difference between the two versions of the Sworn Book is the prayer book used: While the so-called “northern European version” uses prayers from the “glossed version” of Ars Notoria , Ganell’s version uses prayers from the little prayer book edited here, Liber Trium Animarum . It consists of fifty-one prayers, containing sacred names of God and angels. It has some claim to being the older, and is thus offered as a companion to the Sworn Book of Honorius (Peterson, 2016).