The emperor in 680 summons the sixth ecumenical Council of Constantinople.

Some eastern Christians, forbidden to talk of the concept of one nature of Christ, think to enforce the unity of the person of Christ by talking of one will (thelema) and one operation (energeia) from the two natures.

Persons holding this view are called Monothelites.

Sergius, patriarch of Constantinople, and Honorius, pope of Rome, appear to have embraced the Monothelite doctrine.

The council of 680 condemns the Monothelites, among them Honorius, dead for forty-two years, and asserts two wills and two operations, the orthodox christological doctrine as laid in 451 by the Council of Chalcedon (451).

“Each nature with the communion of the other willed and wrought that which was proper to itself.”

The council does not, however, posthumously accuse Honorius of the formal teaching of heresy.