"I vow to change nothing of the received Tradition..." Pope St. Agatho (678-681) Papal Coronation Oath, to be taken by all Roman pontiffs, showing that no Roman pontiff has the authority to contradict the Deposit of Faith, or to change or innovate upon what has been handed by to him by Sacred Tradition and his predecessors: "I vow to change nothing of the received Tradition, and nothing thereof I have found before me guarded by my God-pleasing predecessors, to encroach upon, to alter, or to permit any innovation therein; "To the contrary:...