Council of Constantinople III, 680-681

above, that there is one will and one operation in the dispensation of the Incarnation of our Lord Jesus Christ, our true God [see n. 288], likewise has accepted another Synodal decree, which was sent by the Sacred Council which, under the same most holy Pope, is made up of one hundred and twenty-five bishops ¹ pleasing to God, in accordance with a tranquillity established by God, in so far as they are in agreement with the holy Council of Chalcedon, and the [see n. 148] letter of this most holy and most blessed Pope Leo of ancient Rome which was directed to holy Flavian [see n. 143], and which (letter) the Synod has called a monument of this kind of orthodox faith.

290. Besides, both in Synodical letters which were written by blessed Cyril against the impious Nestorius and to the oriental bishops, following also the five holy ecumenical councils and the holy and trusted Fathers, and defining harmoniously with them it confesses that our Lord Jesus Christ, our true God, one of the holy and consubstantial Trinity and giving forth the origin of life, perfect in Godhead and the same perfect in humanity, truly God and truly man, Himself of a rational soul and body; it confesses the same consubstantial with the Father according to Godhead, and consubstantial with us according to humanity, through all things like to us except in sin [Heb. 4:15], before ages, indeed, begotten of the Father according to Godhead, in the last days, however, the same for us and for our salvation of the Holy Spirit and of the Virgin Mary properly and truly the mother of God according to humanity, one and the same Christ, the only begotten Lord God in two natures recognized unfusedly, unchangeably, inseparably, indivisibly, never the difference of these natures destroyed on account of union, but rather the property of each nature saved and in one person and in one substance concurring, not into two persons portioned or divided but one and the same only begotten Son of God the Word. our Lord Jesus Christ, just as formerly the prophets taught us about Him, and our Lord Jesus Christ Himself has taught us, and the creed of the holy Fathers has handed down to us [Conc. Chal., see n. 148].

291. And so we proclaim two natural wills in Him, and two natural operations indivisibly, inconvertibly, inseparably, unfusedly according to the doctrine of the holy Father, and two natural wills not contrary, God forbid, according as impious heretics have asserted, but the human will following and not resisting or hesitating, but rather even submitting to His divine and omnipotent will. For, it is necessary that the will of the flesh act, but that it be subject to the divine will according to the most wise Athanasius.² For, as His flesh is called and is the flesh of the Word