The Great Commentary of Cornelius à Lapide
2 Corinthians 5:16
Wherefore henceforth know we no man after the flesh. Because the love of Christ for us is so great, and constrains us, therefore we regard carnal things, that is things external and temporal, such as fame, health, friendships, kindred, of no account out of Christ. So Chrysostom takes no one to stand for "nothing," as does Vatablus; and S. Augustine (contra Faust. lib. ix. c. 7) takes it in the same way. But by the flesh he understands the corruption and mortality of the flesh to be meant; and the sense then would be: We no longer know this carnal and mortal life, because, filled with a sure hope, we meditate on and seek for a future life, that blissful spiritual life awaiting us after the resurrection, in which Christ is even now preparing us a place. This meaning is suitable but somewhat far-fetched, for the Apostle is here setting in opposition to the flesh, or the carnal man, the new creature which is in this life, and which lives through faith and grace in Christ; therefore he adds: "If any man be in Christ, he is a new creature."
In the third place, then, we may more simply and properly explain the verse thus: We henceforth know none of those outward relation-ships of kindred, friendship, nationality, rank, breeding, or learning, for we are dead to these natural affections, and having been regenerated in Christ, we live to Him alone, and love Him alone, and all others in Him, according to the spirit of charity, and not according to the flesh. In other words, we seek not to please men, or the praise and glory of men, but of God only. S. Paul's rivals, the Judaising false apostles, as we shall see in chap. xi., were wont to boast that they were Hebrews and of the seed of Abraham, and this boasting he calls, in xi. 18, "glorying after the flesh." Hence this verse is a tacit rebuke to them, where he says that he knows no one in the way of earthly love or boasting, or because of relationship and friendship according to the flesh, not even in Abraham himself. Similarly, in Philippians 3:3, he says, "We rejoice in Christ Jesus and have no confidence in the flesh;" i.e., we once rejoiced that we were Hebrews and nobly born according to the flesh, but now we are dead to those affections, for all our praise and rejoicing is Christ. So Gagneius.
Yea, though we have known Christ after the flesh. If at any time we, whether I, Paul, myself, or the other Apostles, regarded and saw Christ present with us in a mortal body and subject, like us, to bodily sufferings, such as hunger and thirst and cold, now we know Him not save as immortal and passible. So Chrysostom, Theodoret, and the Seventh General Synod. This interpretation too is supported by what follows.
Secondly, and better, Gagneius takes the meaning to be: If we formerly knew, i.e., thought of great account, and made our boast of Christ after the flesh, that Christ by birth was a Jew and of our nation, so that we Hebrews were relations of Christ after the flesh, as the false apostles boast; and if we were proud of having lived with Christ on terms of intimacy, then are we now dead to all such feelings, and, being re-created by Christ, we think more highly of Him, and now know Him only according to the Spirit, i.e., as the God-man, the Redeemer of the world, our Teacher, the Author of grace and salvation; and as we live and labour for such an one, so do we preach Him throughout the whole world.
Thirdly, others with great probability think that Paul is referring to that time in his own life when he was a persecutor of Christ. Although once, he would seem to say, I had an unworthy opinion of Christ, thinking that He was to be a mere temporal king, such as the Jews expect the Messiah to be, yet I no longer know Him or regard Him as such.
Hence, fourthly, we may see the error of Faustus the Manichean, in explaining S. Paul to mean that in the beginning he thought Christ to have had a real body, but afterwards saw his error, and that he means the same in Philippians 2:7, when he says that Christ was made in the likeness of men, as if He had a fantastical and apparent body, but not one that was real and substantial. Eutyches again twisted this passage to suit his heresy. He said that "we know not Christ according to the flesh" means that, by the Incarnation the flesh and human nature of Christ were swallowed up by His Divinity; and he laid down that in Christ was one nature as well as one person, and that that one was Divine.
We may see here how heretics twist and wrest aside the Scripture to suit their own fancies, just as if it were a nose of wax. So did the Iconoclasts of olden times, and lately Calvin (de Reliquiis) twist these words of the Apostle against the veneration of relics and of images of Christ and the Saints, just as though the Apostle had said: Now after the resurrection we know not Christ after the flesh; whatever in Him was carnal must be consigned to oblivion and sent about its business, that we may devote all our energies to seeking Him and possessing Him according to the spirit. But it is most evident that this is not the Apostle's meaning; for if it were, he would have us forget the flesh, the death, and Passion of Christ, and be unmindful of it and unthankful for it, the very opposite of which Christ commanded when He instituted the Eucharist as the perpetual memorial of His death. Whence S. Paul himself says (1Co 11:26): "As often as ye eat this bread and drink this cup ye do show the Lord's death till He come." Therefore the Apostle's meaning here is not Calvin's, but the one I have given above. Cf. Second Council of Nice, Acts 6, following Epiphanius and Cyril.