Introductory to Texts from the Gospels on the Incarnation. Enumeration of texts still to be explained. Arianscompared to the Jews. We must recur to the Regula Fidei. Our Lord did not come into, but became, man, and therefore had the acts and affections of the flesh. The same works divine and human. Thus the flesh was purified, and men were made immortal. Reference to I Peter 4:1
33 Who will not admire this? Or who will not agree that such a thing is truly divine? For if the works of the Word's Godhead had not taken place through the body, man had not been deified; and again, had not the properties of the flesh been ascribed to the Word, man had not been thoroughly delivered from them; but though they had ceased for a little while, as I said before, still sin had remained in him and corruption, as was the case with mankind before Him; and for this reason:— Many for instance have been made holy and clean from all sin; nay, Jeremiah was hallowed even from the womb, and John, while yet in the womb, leapt for joy at the voice of Mary Bearer of God; nevertheless 'death reigned from Adam to Moses, even over those that had not sinned after the similitude of Adam's transgression;' and thus man remained mortal and corruptible as before, liable to the affections proper to their nature. But now the Word having become man and having appropriated what pertains to the flesh, no longer do these things touch the body, because of the Word who has come in it, but they are destroyed by Him, and henceforth men no longer remain sinners and dead according to their proper affections, but having risen according to the Word's power, they abide ever immortal and incorruptible. Whence also, whereas the flesh is born of Mary Bearer of God, He Himself is said to have been born, who furnishes to others an origin of being; in order that He may transfer our origin into Himself, and we may no longer, as mere earth, return to earth, but as being knit into the Word from heaven, may be carried to heaven by Him. Therefore in like manner not without reason has He transferred to Himself the other affections of the body also; that we, no longer as being men, but as proper to the Word, may have share in eternal life. For no longer according to our former origin in Adam do we die; but henceforward our origin and all infirmity of flesh being transferred to the Word, we rise from the earth, the curse from sin being removed, because of Him who is in us, and who has become a curse for us. And with reason; for as we are all from earth and die in Adam, so being regenerated from above of water and Spirit, in the Christ we are all quickened; the flesh being no longer earthly, but being henceforth made Word, by reason of God's Word who for our sake 'became flesh.'
34. And that one may attain to a more exact knowledge of the impassibility of the Word's nature and of the infirmities ascribed to Him because of the flesh, it will be well to listen to the blessed Peter; for he will be a trustworthy witness concerning the Saviour. He writes then in his Epistle thus; 'Christ then having suffered for us in the flesh.' Therefore also when He is said to hunger and thirst and to toil and not to know, and to sleep, and to weep, and to ask, and to flee, and to be born, and to deprecate the cup, and in a word to undergo all that belongs to the flesh, let it be said, as is congruous, in each case 'Christ then hungering and thirsting “for us in the flesh;”' and saying 'He did not know, and being buffeted, and toiling “for us in the flesh;”' and 'being exalted too, and born, and growing “in the flesh;”' and 'fearing and hiding “in the flesh;”' and 'saying, “If it be possible let this cup pass from Me,” and being beaten, and receiving, “for us in the flesh;”' and in a word all such things 'for us in the flesh.' For on this account has the Apostle himself said, 'Christ then having suffered,' not in His Godhead, but 'for us in the flesh,' that these affections may be acknowledged as, not proper to the very Word by nature, but proper by nature to the very flesh.
Let no one then stumble at what belongs to man, but rather let a man know that in nature the Word Himself is impassible, and yet because of that flesh which He put on, these things are ascribed to Him, since they are proper to the flesh, and the body itself is proper to the Saviour. And while He Himself, being impassible in nature, remains as He is, not harmed by these affections, but rather obliterating and destroying them, men, their passions as if changed and abolished in the Impassible, henceforth become themselves also impassible and free from them for ever, as John taught, saying, 'And ye know that He was manifested to take away our sins, and in Him is no sin.' And this being so, no heretic shall object, 'Wherefore rises the flesh, being by nature mortal? And if it rises, why not hunger too and thirst, and suffer, and remain mortal? For it came from the earth, and how can its natural condition pass from it?' since the flesh is able now to make answer to this so contentious heretic, 'I am from earth, being by nature mortal, but afterwards I have become the Word's flesh,' and He 'carried' my affections, though He is without them; and so I became free from them, being no more abandoned to their service because of the Lord who has made me free from them. For if you object to my being rid of that corruption which is by nature, see that you object not to God's Word having taken my form of servitude; for as the Lord, putting on the body, became man, so we men are deified by the Word as being taken to Him through His flesh, and henceforward inherit life 'everlasting.'
35. These points we have found it necessary first to examine, that, when we see Him doing or saying anything divinely through the instrument of His own body, we may know that He so works, being God, and also, if we see Him speaking or suffering humanly, we may not be ignorant that He bore flesh and became man, and hence He so acts and so speaks. For if we recognise what is proper to each, and see and understand that both these things and those are done by One, we are right in our faith, and shall never stray. But if a man looking at what is done divinely by the Word, deny the body, or looking at what is proper to the body, deny the Word's presence in the flesh, or from what is human entertain low thoughts concerning the Word, such a one, as a Jewish vintner, mixing water with the wine, shall account the Cross an offense, or as a Gentile, will deem the preaching folly. This then is what happens to God's enemies the Arians; for looking at what is human in the Saviour, they have judged Him a creature. Therefore they ought, looking also at the divine works of the Word, to deny the origination of His body, and henceforth to rank themselves with Manichees. But for them, learn they, however tardily, that 'the Word became flesh;' and let us, retaining the general scope of the faith, acknowledge that what they interpret ill, has a right interpretation.
Source: Four Discourses Against the Arians (New Advent)