Approved by the Council of Ephesus, AD 431.
“To the most religious and beloved of God, fellow minister Nestorius, Cyril sends greeting in the Lord . . .
The holy and great Synod therefore says, that the only begotten Son, born according to nature of God the Father, very God of very God, Light of Light, by whom the Father made all things, came down, and was incarnate, and was made man, suffered, and rose again the third day, and ascended into heaven. These words and these decrees we ought to follow, considering what is meant by the Word of God being incarnate and made man.
For we do not say that the nature of the Word was changed and became flesh, or that it was converted into a whole man consisting of soul and body; but rather that the Word having personally united to himself flesh animated by a rational soul, did in an ineffable and inconceivable manner become man, and was called the Son of Man, not merely as willing or being pleased to be so called, neither on account of taking to himself a person, but because the two natures being brought together in a true union, there is of both one Christ and one Son; for the difference of the natures is not taken away by the union, but rather the divinity and the humanity make perfect for us the one Lord Jesus Christ by their ineffable and inexpressible union.
So then he who had an existence before all ages and was born of the Father, is said to have been born according to the flesh of a woman, not as though his divine nature received its beginning of existence in the holy Virgin, for it needed not any second generation after that of the Father (for it would be absurd and foolish to say that he who existed before all ages, coeternal with the Father, needed any second beginning of existence), but since, for us and for our salvation, he personally united to himself an human body, and came forth of a woman, he is in this way said to be born after the flesh; for he was not first born a common man of the holy Virgin, and then the Word came down and entered into him, but the union being made in the womb itself, he is said to endure a birth after the flesh, ascribing to himself the birth of his own flesh. . . .
We, therefore, confess one Christ and Lord, not as worshipping a man with the Word (lest this expression “with the Word” should suggest to the mind the idea of division), but worshipping him as one and the same, forasmuch as the body of the Word, with which he sits with the Father, is not separated from the Word himself, not as if two sons were sitting with him, but one by the union with the flesh. If, however, we reject the personal union as impossible or unbecoming, we fall into the error of speaking of two sons, for it will be necessary to distinguish, and to say, that he who was properly man was honored with the appellation of Son, and that he who is properly the Word of God, has by nature both the name and the reality of Sonship.
We must not, therefore, divide the one Lord Jesus Christ into two Sons. Neither will it at all avail to a sound faith to hold, as some do, an union of persons; for the Scripture has not said that the Word united to himself the person of man, but that he was made flesh. This expression, however, “the Word was made flesh,” can mean nothing else but that he partook of flesh and blood like to us; he made our body his own, and came forth man from a woman, not casting off his existence as God, or his generation of God the Father, but even in taking to himself flesh remaining what he was. This the declaration of the correct faith proclaims everywhere.
This was the sentiment of the holy Fathers; therefore they ventured to call the holy Virgin, the Mother of God, not as if the nature of the Word or his divinity had its beginning from the holy Virgin, but because of her was born that holy body with a rational soul, to which the Word being personally united is said to be born according to the flesh.
These things, therefore, I now write unto you for the love of Christ, beseeching you as a brother, and testifying to you before Christ and the elect angels, that you would both think and teach these things with us, that the peace of the Churches may be preserved and the bond of concord and love continue unbroken amongst the Priests of God. . . .
Confessing the Word to be made one with the flesh according to substance, we adore one Son and Lord Jesus Christ: we do not divide the God from the man, nor separate him into parts, as though the two natures were mutually united in him only through a sharing of dignity and authority (for that is a novelty and nothing else), neither do we give separately to the Word of God the name Christ and the same name separately to a different one born of a woman; but we know only one Christ, the Word from God the Father with his own Flesh. For as man he was anointed with us, although it is he himself who gives the Spirit to those who are worthy and not in measure, according to the saying of the blessed Evangelist John.
But we do not say that the Word of God dwelt in him as in a common man born of the holy Virgin, lest Christ be thought of as a God-bearing man; for although the Word tabernacled among us, it is also said that in Christ “dwelt all the fulness of the Godhead bodily”; but we understand that be became flesh, not just as he is said to dwell in the saints, but we define that that tabernacling in him was according to equality But being made one kata fusin, and not converted into flesh, he made his indwelling in such a way, as we may say that the soul of man does in his own body. . . .
And since the holy Virgin brought forth corporally God made one with flesh according to nature, for this reason we also call her Mother of God, not as if the nature of the Word had the beginning of its existence from the flesh. . . .
The 12 Anathemas, Proposed by Cyril and accepted by the Council of Ephesus:
- If anyone does not confess that Emmanuel is God in truth, and therefore that the holy virgin is the mother of God (for she bore in a fleshly way the Word of God become flesh), let him be anathema.
- If anyone does not confess that the Word from God the Father has been united by hypostasis with the flesh and is one Christ with his own flesh, and is therefore God and man together, let him be anathema.
- If anyone divides in the one Christ the hypostases after the union, joining them only by a conjunction of dignity or authority or power, and not rather by a coming together in a union by nature, let him be anathema.
- If anyone distributes between the two persons or hypostases the expressions used either in the gospels or in the apostolic writings, whether they are used by the holy writers of Christ or by him about himself, and ascribes some to him as to a man, thought of separately from the Word from God, and others, as befitting God, to him as to the Word from God the Father, let him be anathema.
- If anyone dares to say that Christ was a God-bearing man and not rather God in truth, being by nature one Son, even as “the Word became flesh”, and is made partaker of blood and flesh precisely like us, let him be anathema.
- If anyone says that the Word from God the Father was the God or master of Christ, and does not rather confess the same both God and man, the Word having become flesh, according to the scriptures, let him be anathema.
- If anyone says that as man Jesus was activated by the Word of God and was clothed with the glory of the Only-begotten, as a being separate from him, let him be anathema.
- If anyone dares to say that the man who was assumed ought to be worshipped and glorified together with the divine Word and be called God along with him, while being separate from him, (for the addition of “with” must always compel us to think in this way), and will not rather worship Emmanuel with one veneration and send up to him one doxology, even as “the Word became flesh”, let him be anathema.
- If anyone says that the one Lord Jesus Christ was glorified by the Spirit, as making use of an alien power that worked through him and as having received from him the power to master unclean spirits and to work divine wonders among people, and does not rather say that it was his own proper Spirit through whom he worked the divine wonders, let him be anathema.
- The divine scripture says Christ became “the high priest and apostle of our confession”; he offered himself to God the Father in an odour of sweetness for our sake. If anyone, therefore, says that it was not the very Word from God who became our high priest and apostle, when he became flesh and a man like us, but as it were another who was separate from him, in particular a man from a woman, or if anyone says that he offered the sacrifice also for himself and not rather for us alone (for he who knew no sin needed no offering), let him be anathema.
- If anyone does not confess that the flesh of the Lord is life-giving and belongs to the Word from God the Father, but maintains that it belongs to another besides him, united with him in dignity or as enjoying a mere divine indwelling, and is not rather life-giving, as we said, since it became the flesh belonging to the Word who has power to bring all things to life, let him be anathema.
- If anyone does not confess that the Word of God suffered in the flesh and was crucified in the flesh and tasted death in the flesh and became the first born of the dead, although as God he is life and life-giving, let him be anathema.