Orth.— Because it is not about the Godhead, but about the manhood, that you are in difficulties. Had you been in doubt about the Godhead, I would have given you proof of it. It is enough to say “according to the Flesh” to declare the Godhead which is not expressed in terms. When speaking of a relationship of man in general I do not say the son of such an one “according to the flesh,” but simply “son,” so the divine Evangelist writing his genealogy says “Abraham begot Isaac” and does not add according to the flesh, for Isaac was merely man, and he mentions the rest in like manner, for they were men and had no qualities transcending their nature. But when the heralds of the truth are discoursing of our Lord Christ, and are pointing out to the ignorant His lower relation, they add the words “according to the flesh,” thus indicating His Godhead and teaching that the Lord Christ was not only man but also Eternal God.
Eran.— You have adduced many proofs from the apostles and prophets, but I follow the words of the Evangelist “The Word was made Flesh.”
Orth.— I also follow this divine teaching, but I understand it in a pious sense, as meaning that He was made Flesh by taking flesh and a reasonable soul. But if the divine Word took nothing of our nature, then the covenants made with the patriarchs by the God of all with oaths were not true, and the blessing of Judah was vain, and the promise to David was false, and the Virgin was superfluous, because she did not contribute anything of our nature to the Incarnate God. Then the predictions of the prophets have no fulfilment. Then vain is our preaching, vain our faith and vain the hope of the resurrection for the Apostle, it appears, lies when he says “and has raised us up together and made us sit together in heavenly places in Christ Jesus.” For if the Lord Christ had nothing of our nature then He is falsely described as our first fruits, and His bodily nature has not risen from the dead and has not taken the seat in Heaven on the right hand; and if He has obtained none of these things, how has God raised us up together and made us sit together with Christ, when we in no wise belong to Him in Nature? But it is impious to say this, for the divine apostle, though the general resurrection has not yet taken place, though the kingdom of heaven has not yet been bestowed upon the faithful, exclaims, “He has raised us up together and made us sit together in heavenly places in Christ Jesus,” in order to teach that since the resurrection of our first fruits, and His sitting on the right hand has come to pass, we too in general shall attain the resurrection, and that all they who share in His nature and have adopted His faith, share too in the first fruits of His glory.
Eran.— We have gone through many and sound arguments, but I was anxious to know the force of the Gospel saying.
Orth.— You stand in need of no interpretation from without. The evangelist himself interprets himself. For after saying “the Word was made flesh,” he goes on “and dwelt among us.” That is to say by dwelling in us, and using the flesh taken from us as a kind of temple, He is said to have been made flesh, and, teaching that He remained unchanged, the evangelist adds “and we beheld His glory— the glory as of the only begotten of the Father, full of grace and truth.” For though clad with flesh He exhibited His Father's nobility, shot forth the beams of the Godhead, and emitted the radiance of the power of the Lord, revealing by His works of wonder His hidden nature. A similar illustration is afforded by the words of the divine apostle to the Philippians: “Let this mind be in you which was also in Christ Jesus, who being in the form of God thought it not robbery to be equal with God, but made Himself of no reputation and took upon Him the form of a servant and was made in the likeness of men, and being found in fashion as a man he humbled Himself and became obedient unto death even the death of the cross.”
Look at the relation of the utterances. The evangelist says “the Word was made flesh and dwelt among us,” the apostle, “took upon him the form of a servant;” the evangelist “We beheld His glory, the glory as of the only begotten of the Father”— the apostle, “who being in the form of God thought it not robbery to be equal with God.” To put the matter briefly, both teach that being God and son of God, and clad with His Father's glory, and having the same nature and power with Him that begot Him, He that was in the beginning and was with God, and was God, and was Creator of the world, took upon Him the form of a servant, and it seemed that this was all which was seen; but it was God clad in human nature, and working out the salvation of men. This is what was meant by “The word was made flesh” and “was made in the likeness of men and being found in fashion as a man.” This is all that was looked at by the Jews, and therefore they said to him “For a good work we stone You not but for blasphemy and because that You being a man make Yourself God,” and again “This man is not of God because He keeps not the Sabbath Day.”
Eran.— The Jews were blind on account of their unbelief, and therefore used these words.
Orth.— If you find even the apostles before the resurrection thus saying, will you receive the interpretation? I hear them in the boat, after the mighty miracle of the calm, saying “what manner of man is this, that even the winds and the sea obey Him?”
Eran.— This is made plain. But now tell me this—the divine apostle says that He “was made in the likeness of man.”
Orth.— What was taken of him was not man's likeness, but man's nature. For “form of a servant” is understood just as “the form of God” is understood to mean God's nature. He took this, and so was made in the likeness of man, and was found in fashion as a man. For, being God, He seemed to be man, on account of the nature which He took. The evangelist, however, speaks of His being made in the likeness of man as His being made flesh. But that you may know that they who deny the flesh of the Saviour are of the opposite spirit, hear the great John in his Catholic Epistle saying “Every spirit that confesses that Jesus Christ has come in the flesh is of God, and every spirit that confesses not that Jesus Christ has come in the flesh is not of God, and this is that spirit of Anti-Christ.”
Eran.— You have given a plausible interpretation, but I was anxious to know how the old teachers of the Church have understood the passage “the word was made flesh.”
Orth.— You ought to have been persuaded by the apostolic and prophetic proofs; but since you require further the interpretations of the holy Fathers I will also furnish you, God helping me, this medicine.
Eran.— Do not bring me men of obscure position or doubtful doctrine. I shall not receive the interpretation of such as these.
Orth.— Does the far famed Athanasius, brightest light of the church of Alexandria, seem to you to be worthy of credit?
Eran.— Certainly, for he ratified his teaching by the suffering he underwent for the Truth's sake.
Orth.— Hear then how he wrote to Epictetus. “The expression of John 'the Word was made flesh' has this interpretation, so far as can be discovered from the similar passage which we find in St. Paul 'Christ was made a curse for us.' It is not because He was made a curse but because He received the curse on our behalf that He is said to have been made a curse, and so it is not because He was turned into flesh, but because He took flesh on our behalf, that He is said to have been made flesh.” So far the divine Athanasius. Gregory, too, whose glory among all men is great, who formerly ruled the Imperial city at the mouth of the Bosphorus and afterwards dwelt at Nazianzus, thus wrote to Cledonius against the specious fallacies of Apollinarius.
Eran.— He was an illustrious man and a foremost fighter in the cause of piety.
Source: Dialogues ("Eranistes" or "Polymorphus") (New Advent)