Council of Constantinople III, 680-681

but rather the property of each nature preserved and concurring in one person and in one subsistence; not shared or divided in a duality of persons, nor fused into one composite nature; but we acknowledge, even after the subsistential union, one and the same only begotten Son, the Word God, our Lord Jesus Christ [see n. 148], neither each in a different way, nor the one and the other, but the very same in two natures, that is, in the Godhead and in the humanity, because neither has the Word been changed into the nature of the flesh, nor has the flesh been transformed into the nature of the Word; for each remains what by nature it was; indeed in contemplation alone do we discern a difference of the united natures in that from which unfusedly, inseparably, and incommutably it was composed; for one from both and each through one, because at the same time there are present both the dignity of the Godhead and the humility of the flesh, each nature, even after the union, preserving without defect its own property, "and each form doing with the mutual participation of the other what it holds as its own (work); the Word doing what is of the Word, and the flesh accomplishing what is of the flesh; the one of which shines forth in miracles, the other submits to injuries." ¹ Thus, it follows that as we truly confess that He has two natures or substances, that is, the Godhead and the humanity, unfusedly, indivisibly, incommutably, so also He has both two natural wills and two natural operations, since the rule of piety instructs us that perfect God and perfect man is one and the same Lord Jesus Christ [see n. 254-274], because it is shown that the apostolic and evangelical tradition and the teaching of the holy Fathers, whom the holy, apostolic, and Catholic Church and the venerable Synods accept, have taught us this.

COUNCIL OF CONSTANTINOPLE III 680–681

Ecumenical VI (against the Monothelites)

Definition of the Two Wills of Christ ²

289. This present holy and universal Synod faithfully receiving and willingly accepting such a suggestion which was made by the most holy and most blessed Agatho, Pope of ancient Rome, to Constantine, our very good and most faithful ruler, which (decree) by name has excommunicated those who have taught or have preached, as has been said