On this day we celebrate the feast of Pope St. Agatho, who was elected in 678 when he was over 100 years old. He reigned until 681.
The inscription on his tomb reads: "the highest priest Agatho holds firm the covenants of the Apostolic See. There is piety! There is the ancient Faith! The undefiled badges of the Fathers remain, nourisher, through your efforts."
It was a tribute to his stance against Monothelitism. Pope Agatho's judgment that Christ had two wills, human and divine, put an end to the Monothelite heresy. The legates he sent to the Sixth Ecumenical Council at Constantinople in 680 carried letters that "repeatedly affirmed the inerrancy of the Apostolic See". The bishops agreed that "by Agatho, Peter spoke".