This Egyptiac conception of a single universal godhead manifesting itself under a host of local names was not only extended from Re of Heliopolis to Amon-Re of Thebes. In an age when the Egyptiac Civilization itself was on the eve of extinction we find an Egyptiac Isis who by this time had conquered a spiritual empire for herself in an alien Hellenic World laying claim to the same Protean universality in her epiphany to the hero of Apuleius’s pornographico-devotional romance.
Source: wiktionary