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In ancient Egyptian culture the duality of deities – most often manifested in their male/female relationships – was an integral aspect of the belief system. This duality appeared in Nun, the limitless ocean of potentiality out of which the universe was born. Within those waters, the male and female aspects appeared as frogs (males) and snakes (females). There were four couples, according to the beliefs at Hermopolis, making up the eight most important gods of “pre-creation” referred to at this cult center as the “Ogdoad”. Each of these gods and goddesses acquired names and, as a unit, they represented the earliest aspects of reality.
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Charles River Editors (Horus: The History and Legacy of the Ancient Egyptian God Who Was the Son of Isis and Osiris)