 Under the Greek Ptolemaic Dynasty and then Roman rule , Greeks and Romans introduced their own deities to Egypt . These newcomers equated the Egyptian gods with their own , as part of the Greco @-@ Roman tradition of interpretatio graeca . But the worship of the native gods was not swallowed up by that of foreign ones . Instead , Greek and Roman gods were adopted as manifestations of Egyptian ones . Egyptian cults sometimes incorporated Greek language , philosophy , iconography , and even temple architecture . Meanwhile , the cults of several Egyptian deities — particularly Isis , Osiris , Anubis , the form of Horus named Harpocrates , and the fused Greco @-@ Egyptian god Serapis — were adopted into Roman religion and spread across the Roman Empire . Roman emperors , like Ptolemaic kings before them , invoked Isis and Serapis to endorse their authority , inside and outside Egypt . In the empire 's complex mix of religious traditions , Thoth was transmuted into the legendary esoteric teacher Hermes Trismegistus , and Isis , who was venerated from Britain to Mesopotamia , became the focus of a Greek @-@ style mystery cult . Isis and Hermes Trismegistus were both prominent in the Western esoteric tradition that grew from the Roman religious world . 
 Under the Greek Ptolemaic Dynasty and then Roman rule , Greeks and Romans introduced their own deities to Egypt . These newcomers equated the Egyptian gods with their own , as part of the Greco @-@ Roman tradition of interpretatio graeca . But the worship of the native gods was not swallowed up by that of foreign ones . Instead , Greek and Roman gods <a href='uninflect' title='1'><mark>were</mark></a> adopted as manifestations of Egyptian ones . Egyptian cults sometimes incorporated Greek language , philosophy , iconography , and even temple architecture . Meanwhile , the cults of several Egyptian deities — particularly Isis , Osiris , Anubis , the form of Horus named Harpocrates , and the fused Greco @-@ Egyptian god Serapis — <a href='uninflect' title='2'><mark>were</mark></a> adopted into Roman religion and spread across the Roman Empire . Roman emperors , like Ptolemaic kings before them , invoked Isis and Serapis to endorse their authority , inside and outside Egypt . In the empire <a href='null_genetive' title='3'><mark>'s</mark></a>complex mix of religious traditions , Thoth was transmuted into the legendary esoteric teacher Hermes Trismegistus , and Isis , <a href='null_relcl' title='4'><mark>who</mark></a>was venerated from Britain to Mesopotamia , became the focus of a Greek @-@ style mystery cult . Isis and Hermes Trismegistus <a href='uninflect' title='5'><mark>were</mark></a> both prominent in the Western esoteric tradition <a href='null_relcl' title='6'><mark>that</mark></a>grew from the Roman religious world . 
Under the Greek Ptolemaic Dynasty and then Roman rule , Greeks and Romans introduced their own deities to Egypt . These newcomers equated da Egyptian gods with their own , as part of tdaGreco @-@ Roman tradition of interpretatio graeca . But thdaorship of the native gods was not swallowed up by that of foreign ones . Instead , Greek and Roman gods was adopted as manifestations of Egyptian ones . Egyptian cults sometimes incorporated Greek language , philosophy , iconography , and even temple architecture . Meanwhile , the cults of several Egyptian deities — particularly Isis , Osiris , Anubis , the form of Horus named Harpocrates , and the fused Greco @-@ Egyptian god Serapis — was adopted into Roman religion and spread across the Roman Empire . Roman emperors , like Ptolemaic kings before them , invoked Isis and Serapis to endorse their authority , inside and outside Egypt . In thedapire  complex mix of religious traditions , Thoth was transmuted into the daendary esoteric teacher Hermes Trismegistus , and Isis , was venerated from Britain to Mesopotamia , became the focus of a Greek @-@ style mystery cult . Isis and Hermes Trismegistus was both prominent in the Wdaern esoteric tradition grew from the Roman religious world .