Enochian magic is a system of ceremonial magic based on the invocation and commanding of various spirits. It is based on the 16th-century writings of Dr. John Dee and Edward Kelley, who claimed that their information, including the revealed Enochian language, was delivered to them directly by various angels. Dee's journals contained the Enochian script, and the tables of correspondences that accompany it. Dee and Kelley believed their visions gave them access to secrets contained within the apocryphal Book of Enoch.