NICENE CREED (original text): Appendix p. 218. PICTURE OF COUNCIL OF NICAEA: p. 106.
Christ is the Son of God, but also the Son of Mary. Then has he two natures or one? The Monophysites said “one.” They did not deny Christ’s incarnation, but they asserted that the divine in him had quite absorbed the human. The question was first raised in clerical circles in Constantinople, but Alexandria took it up hotly, and “Single Nature” became the national cry of Egypt. We have already seen (p. 51) the political importance of this heresy, how it was connected with a racial movement against the Greeks, how when it was condemned at Chalcedon (451) Egypt slipped into permanent mutiny against the Empire. The Council announced that Christ had two natures, unmixed and unchangeable but at the same time indistinguishable and inseparable. This is the orthodox view—the one we hold. The Copts (and Abyssinians) are still Monophysites, and consequently not in communion with the rest of Christendom.
As the minds of the Alexandrians decayed, their heresies became more and more technical. Arianism enshrines a real problem which the layman as well as the cleric can apprehend. Monophysism is more remote. And Monothelism is difficult to state in the language of theology, and almost impossible to state in the language of common sense. Perhaps it bears in it the signs of carelessness, for as we have seen (p. 54) it was the invention of the Emperor Heraclius in the last desperate days when he was trying to conciliate Egypt.
If Christ has one Nature he has of course one will. But suppose he has two Natures. How many wills has he then? The Monothelites said “One.” The orthodox view—the one we hold—is “Two, one human the other divine, but both operating in unison.” Obscure indeed is the problem, and we can well believe that the Alexandrians, against whom the Arabs were then marching, did not understand Monothelism when it was hurriedly explained to them by a preoccupied general. But it was not without a future. It failed as a compromise but survived as a heresy, and long after the Imperial Government had disowned it and Egypt had fallen to Islam, it was cherished in the uplands of Syria by the Maronite Church.