Theurgy
The practice of magical rituals to attain communion with the gods or beneficent spirits. Thomas Taylor called it “the art of divine works.” It comes from two Greek words, theoi, gods, and ergein, work, thus implying work of a divine nature or “work of the gods.”
Helena P. Blavatsky states that it was one of the three divisions of Eclectic Theosophy of Ammonius Saccas, the founder of Neoplatonism. The Neo-Platonists Iamblichus wrote of it extensively in his work, On the Mysteries. He states that the theurgist, “through the power of arcane signatures,” is able to command “mundane natures,” no longer as a human being, but like gods (p. 281, Thomas Taylor translation).