Calvin on the Papacy

However, soon after Gregory the Great, the various successive bishops of Rome started to demand that they be called 'Pope' alias ‘[Universal] Father.’    Continues Dr. Calvin: “At length [the new Emperor] Phocas…conceded to Boniface III  [who was Bishop of Rome from A.D. 607-8] what Gregory by no means demanded — viz. that Rome should be the head of all the churches….    

“Zachary the Roman Pontiff [from 741 to 752]…had the jurisdiction of the Roman See established over the churches of France….   The tyranny of the Roman Bishop was established, and ever and anon increased….