Eunapius

Eunapius was a Greek philosopher and historian, born at Sardis in 347 AD. He wrote brief Lives of Sophists, numbering twenty-three, hostile to Christianity, and a chronicle or history of events from 270 - 404 AD.

Life of Maximus:

After himself there would arise a priest to whom it was forbidden to sit upon the priestly throne since it was consecrated to strange divinities, and mighty oaths had he sworn not to take part in strange rites. He declared nevertheless that he would take part although not even an Athenian... and his words came to pass in this way. For at teh same time that Agoraeus Vettius arose, founder of the Mithraic cult, and for no long (period)... when a storm of misfortunes, numerous and indescribable, had broken...