Rom 8:13

“Rightly therefore does the apostle declare, "Flesh and blood cannot inherit the kingdom of God;" and, "Those who are in the flesh cannot please God:" not repudiating [by these words] the substance of flesh, but showing that into it the Spirit must be infused. And for this reason, he says, "This mortal must put on immortality, and this corruptible must put on incorruption." And again he declares, "But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you." He sets this forth still more plainly, where he says, "The body indeed is dead, because of sin; but the Spirit is life, because of righteousness. But if the Spirit of Him who raised up Jesus from the dead dwell in you, He that raised up Christ from the dead shall also quicken your mortal bodies, because of His Spirit dwelling in you." And again he says, in the Epistle to the Romans, "For if ye live after the flesh, ye shall die." [Now by these words] he does not prohibit them from living their lives in the flesh, for he was himself in the flesh when he wrote to them; but he cuts away the lusts of the flesh, those which bring death upon a man. And for this reason he says in continuation, "But if ye through the Spirit do mortify the works of the flesh, ye shall live. For whosoever are led by the Spirit of God, these are the sons of God."”

“Putting to death the deeds of the body works like this: Love is a fruit of the Spirit, but hate is an act of the flesh. Therefore hate is put to death and extinguished by love. Likewise, joy is a fruit of the Spirit, but sadness is of this world, and because it brings death it is a work of the flesh. Therefore it is extinguished if the joy of the Spirit dwells in us. Peace is a fruit of the Spirit, but dissension or discord is an act of the flesh; however, it is certain that discord can be eliminated by peace. Likewise the patience of the Spirit overcomes the impatience of the flesh, goodness wipes out evil, meekness does away with ferocity, continence with intemperance, chastity with license and so on.By "death" and "life," Paul does not mean physical death and life but the death of sin and eternal life, which everyone who is mature in the Spirit and who has put to death the works of the flesh will attain. But we must also realize that this mortification of the deeds of the flesh comes through patience—not suddenly but step by step. At first they start to wilt in those who have been converted, but then, as they progress in their faith and become more dedicated, the deeds of the flesh not only wilt, they start to die out. But when they reach maturity to the point that there is no longer any trace in them of any sinful thought, word or deed, then they may be reckoned to have completely mortified the deeds of the flesh and passed from death to life.”

“It is not strange that one who puts to death the deeds of the flesh will live, since one who has the Spirit of God becomes a son of God. It is for this reason that he is a son of God, so that he may receive not the spirit of slavery but the spirit of the adoption of sons, inasmuch as the Holy Spirit bears witness with our spirit that we are sons of God.”

“Carnal people cannot preserve righteousness. But you will live if you have replaced the works of the flesh with spiritual deeds. Note that it is the works which are condemned, not the substance of the flesh.”

“That we should mortify the deeds of the flesh by the Spirit is required of us, but that we may live is offered to us.… Shall we therefore agree to say that the mortification of the flesh is not a gift of God and not confess it to be a gift of God, since we hear that it is required of us, with life offered as a reward to us if we have done it?”

“When by our spirit we put to death the works of the flesh we are impelled by the Spirit of God, which grants the continence by which we restrain, master and overcome concupiscence.”

“I have quoted this passage so that I might make use of the apostle's words to deter your free will from evil and to exhort it to what is good. Nor should you on this account glory in man, i.e., in yourselves and not in the Lord. You are not living according to the flesh but are putting the deeds of the flesh to death by the Spirit.”

“Paul does not say that we should mortify the flesh but "the deeds of the flesh," that is, the wisdom of the flesh, the attacks of the passions. For we have the grace of the Spirit to help us. Eternal life is the fruit of victory.”

“By death he means here not only the immortal punishment in gehenna; but he also calls death the life spent on earth in evil deeds. On the contrary, if by spiritual life we put to death the evil deeds of the flesh, we shall live both then — with life unending, and now — with a virtuous life. For whoever is dead to the world, that one lives. Note, however, that he did not say: you put to death the body (for that would be murder), but: "the deeds of the flesh," evidently, the sinful ones. For one must put to death not simply sight or hearing (for to see or to hear is a natural bodily function), but their use for evil.”

“Then when he says, "for if you live according to the flesh," he gives the reason for the above conclusion. And first, as to the flesh, saying, "if you live according to the flesh," namely, by following the desires of the flesh, "you will die," namely, the death of guilt in the present and the death of damnation in the future: "she who is self-indulgent is dead even while she lives" (1 Tim 5:6). Second, he gives a reason as to the spirit, saying, "but if by the spirit," i.e., through the spirit, "you mortify the deeds of the flesh," i.e., deeds which flow from the desires of the flesh, "you will live," namely, the life of grace in the present and the life of glory in the future: "put to death what is earthly in you" (Col 3:5); "those who belong to Christ Jesus have crucified their flesh with its passions and desires" (Gal 5:24).”

“Nothing is truer than this, that if we live according to Adam we shall die. For by sinning Adam was consigned to the flesh and sold himself to sin, for all sin is oriented to the flesh.… The body wants to be governed by the law of the spirit, which is why Paul shows that if we are led by the Holy Spirit the acts and desires of the flesh, which are made up by the instigation of the powers of this world, are repressed so as to be unable to act. Then we shall enjoy eternal life.”