Hippolytus of Rome (Refutation of All Heresies, IX, 8-13) records that in the time of Pope Callixtus I (217–222 AD), a Jewish Christian called Alcibiades of Apamea came to Rome, bringing a book which he said had been received in Parthia by a just man named Elchasai.[2] According to Alcibiades, the book had been revealed by an angel ninety-six miles high, sixteen miles broad and twenty-four across the shoulders, whose footprints were fourteen miles long and four miles wide by two miles deep.