“Agrippa’s claim of an Egyptian origin for the Holy Daemon turns out to be true. However, our exploration does not take us back to the Priests of Osiris and the builders of Pharaonic Pyramids. Instead, it takes us to Egypt after its Hellenization by the Greek Empire, under the governance of the Ptolemy family. It is here that we find that curious language known as "Coptic"- which is simply a melding of the Egyptian spoken tongue with the written characters of the Greek alphabet. It is here that we find the famous "Greek Magical Papyri"- which formed the basis of what would later be called Gnostic magick.” - Aaron Leitch. https://kheph777.tripod.com/art_HGA.html
Greek Magical Papyri (PGM) The Papyri Graecae Magicae a key source for Hellenistic theurgy and magic, blending Greek, Egyptian, and Jewish elements.