Rom 8:6

“Animal men, again, are instructed in animal things; such men, namely, as are established by their works, and by a mere faith, while they have not perfect knowledge. We of the Church, they say, are these persons. Wherefore also they maintain that good works are necessary to us, for that otherwise it is impossible we should be saved. But as to themselves, they hold that they shall be entirely and undoubtedly saved, not by means of conduct, but because they are spiritual by nature. For, just as it is impossible that material substance should partake of salvation (since, indeed, they maintain that it is incapable of receiving it), so again it is impossible that spiritual substance (by which they mean themselves) should ever come under the power of corruption, whatever the sort of actions in which they indulged. For even as gold, when submersed in filth, loses not on that account its beauty, but retains its own native qualities, the filth having no power to injure the gold, so they affirm that they cannot in any measure suffer hurt, or lose their spiritual substance, whatever the material actions in which they may be involved.”

“But the condemnation of sin is the acquittal of the flesh, just as its non-condemnation subjugates it to the law of sin and death. In like manner, he called "the carnal mind" first "death," and afterwards "enmity against God; " but he never predicated this of the flesh itself.”

“Whoever interprets the law according to the flesh, i.e., according to the letter, does not come to Christ, who is life.”

“"To set the mind on the Spirit is life." For error, imprudence and ignorance are impassioned, self-rebellious, self-contradictory. And because of this "to set the mind on the flesh," which is imprudence, is death, because it does not know God. Therefore, "to set the mind on the Spirit is life and peace."”

“He does not speak of the nature of the flesh, or the essence of the body, but of being carnally "minded," which may be set right again, and abolished. And in saying thus, he does not ascribe to the flesh any reasoning power of its own. Far from it. But to set forth the grosser motion of the mind, and giving this a name from the inferior part, and in the same way as he often is in the habit of calling man in his entireness, and viewed as possessed of a soul, flesh. "But to be spiritually minded." Here again he speaks of the spiritual mind, in the same way as he says further on, "But He that searcheth the hearts knoweth what is the mind of the spirit"; and he points out many blessings resulting from this, both in the present life, and in that which is to come. For as the evils which being carnally minded introduces, are far outnumbered by those blessings which a spiritual mind affords. And this he points out in the words "life and peace." The one is in contraposition to the first-for death is what he says to be carnally minded is. And the other in contraposition to the following. For after mentioning peace, he goes on...”

“Paul says elsewhere that it is human wisdom to repay evil for evil. Such wisdom obtains death because it transgresses the commandment. But the wisdom of the Spirit enjoys peace now because it does not repay in kind, and in the future it will obtain eternal life.”

“"Death" is estrangement and punishment from God; "life" is immortality and "peace" is fellowship with him.”

“The mindset of the flesh he calls the coarsest way of thinking, its name being borrowed from the baser part of man. For the flesh in itself does not have its own thinking, but the mindset of the flesh is a coarse and material way of thinking, which one might call a mind that thinks about fleshly things. Likewise, the spiritual mindset is a mind that thinks about spiritual things. The latter gives birth to life, in contrast to the death that the mindset of the flesh gives birth to, and also peace, in contrast to what is spoken of further on.”

“"Flesh and blood have surely revealed this wisdom to you, not the Spirit of the Father"; for this is "the wisdom of the flesh." But hear what our physicians think of it. "The wisdom of the flesh," they say, "is death"; likewise: "The wisdom of the flesh is hostile to God" (Rom 8:6-7). Ought I to have set before you the opinion of Hippocrates or Galen, or surely from the school of Epicurus? I am a disciple of Christ; I speak to disciples of Christ: if I introduce a foreign doctrine, I myself have sinned. Epicurus and Hippocrates, the one puts forward the pleasure of the body, the other good physical condition; my Master preaches contempt for both. The life of the soul in the body, which the one with utmost zeal inquires whence to sustain, the other whence even to delight, and teaches others to inquire, the Savior counsels even to lose. For what else sounded to you from the lecture hall of Christ, when just a little while ago it was proclaimed: "He who loves his soul shall lose it"? (Jn 12:25.) "He shall lose it," he said, whether by laying it down as a martyr, or by afflicting it as a penitent. Although it is a kind of martyrdom to mortify the deeds of the flesh by the spirit; milder indeed in horror than that in which the limbs are cut by the sword, but more troublesome by reason of its duration. Do you see that by this judgment of my Master the wisdom of the flesh is condemned, through which either one flows away into the excess of pleasure, or even a good state of bodily health is desired beyond what is fitting?”

“Third, he states the major premise of the first syllogism, saying, "for the prudence of the flesh is death." To understand this, it should be noted that prudence is right reason concerning the doable, as the Philosopher says in Ethics IV. But right reason concerning things to be done presupposes one thing and does three things. For it presupposes a goal that functions as a principle in human actions, just as the speculative reason presupposes principles from which it proceeds to demonstration. But right reason concerning the doable does three things: first, it plans correctly; second, it judges correctly about plans; third, it correctly and firmly commands what was planned. Hence, for prudence of the flesh it is required that a person presuppose as his goal a pleasure of the flesh and that he plan and judge and command what leads to this end. That is why such prudence is death, i.e., the cause of eternal death: "he who sows in the flesh will from the flesh reap corruption" (Gal 6:8). Fourth, he states the major premise of the second syllogism, saying, "but the prudence of the spirit is life and peace." Now according to what has just been said, there is prudence of the spirit when someone, presupposing a spiritual good as the goal, plans and judges and commands the things that are suitably ordered to that goal. Hence such prudence is life, i.e., the cause of grace and glory: "he who sows in the spirit will from the spirit reap eternal life" (Gal 6:8); and it is peace, i.e., the cause of peace, for peace is caused by the Holy Spirit: "great peace have those who love your law" (Ps 119:165); "the fruit of the Spirit is love, joy, peace" (Gal 5:22).”

“The wisdom of the flesh is death because sin is serious and it is through sin that this death comes. It is called wisdom, even though it is a foolish thing, because to worldly people sins against the law of God which are conceived, whether in thought or in deed, on the basis of what is visible appear as wisdom, especially because those who sin are full of energy and cleverness. The fact that they take so much trouble over it makes them appear wise, even though there is nothing more foolish than sinning. Moreover, there is yet another wisdom of the flesh which, puffed up as it is by earthly reasoning, denies the possibility of miracles. Therefore it laughs at the virgin birth and at the resurrection of the flesh. The wisdom of the Spirit, on the other hand, is true wisdom which leads to life and peace.… Paul did not say that the flesh is hostile but rather that "the wisdom of the flesh" is. "The wisdom of the flesh" means, in the first place, any argument about the unknown which men have come up with and, in the second place, a preference for what can be seen. Both these things are hostile to God because they make the Lord of the elements and the Creator of the world equal to what he has made and assert that nothing can happen unless there is a rational cause for it. For this reason they deny that God made a virgin give birth or that he raises the bodies of the dead. They say that it is absurd that God should do anything beyond what man can understand, and therefore he did not do it.… These people are so blinded that they do not see how greatly they are insulting God, for the work which he was pleased to do in order that his praise should be proclaimed they condemn and claim is unbelievable and absurd.”