Vicarius Filii Dei
Vicarius Filii Dei (Latin: Vicarivs translates to "substitute; supplying the place of someone" "Filii" is of son and "Dei" is of God...literal translation is substitute of son of god) is a phrase first used in the forged medieval Donation of Constantine to refer to Saint Peter, who is regarded as the first Pope by the Catholic Church. == Origins and uses of the phrase == The earliest known instance of the phrase Vicarius Filii Dei is in the Donation of Constantine, now dated between the eighth and the ninth centuries AD. ...