For the {i} flesh lusteth against the Spirit, and the Spirit against the flesh: and these are contrary the one to the other: so that ye cannot do the things that ye would.

(i) For the flesh dwells even in the regenerated man, but the Spirit reigns, even though not without great strife, as is largely set forth in Ro 7:1-25.

People's New Testament

5:17 The flesh lusteth against the Spirit, etc. The desires of the flesh and the Spirit are in conflict. They war within us. One would lead in one direction, and the other in another.

So that ye cannot do the things that ye would. The Greek is not so strong as this. It implies that the two wills within us hinder us from doing as we would by their conflict.

Wesley's Notes

5:17 For the flesh desireth against the Spirit - Nature desires what is quite contrary to the Spirit of God. But the Spirit against the flesh - - But the Holy Spirit on his part opposes your evil nature. These are contrary to each other - The flesh and the Spirit; there can be no agreement between them. That ye may not do the things which ye would - - That, being thus strengthened by the Spirit, ye may not fulfil the desire of the flesh, as otherwise ye would do.

Jamieson-Fausset-Brown Bible Commentary

17. For-the reason why walking by the Spirit will exclude fulfilling the lusts of the flesh, namely, their mutual contrariety.

the Spirit-not "lusteth," but "tendeth (or some such word is to be supplied) against the flesh."

so that ye cannot do the things that ye would-The Spirit strives against the flesh and its evil influence; the flesh against the Spirit and His good influence, so that neither the one nor the other can be fully carried out into action. "But" (Ga 5:18) where "the Spirit" prevails, the issue of the struggle no longer continues doubtful (Ro 7:15-20) [Bengel]. The Greek is, "that ye may not do the things that ye would." "The flesh and Spirit are contrary one to the other," so that you must distinguish what proceeds from the Spirit, and what from the flesh; and you must not fulfil what you desire according to the carnal self, but what the Spirit within you desires [Neander]. But the antithesis of Ga 5:18 ("But," &c.), where the conflict is decided, shows, I think, that here Ga 5:17 contemplates the inability both for fully accomplishing the good we "would," owing to the opposition of the flesh, and for doing the evil our flesh would desire, owing to the opposition of the Spirit in the awakened man (such as the Galatians are assumed to be), until we yield ourselves wholly by the Spirit to "walk by the Spirit" (Ga 5:16, 18).

Matthew Henry's Concise Commentary

5:16-26 If it be our care to act under the guidance and power of the blessed Spirit, though we may not be freed from the stirrings and oppositions of the corrupt nature which remains in us, it shall not have dominion over us. Believers are engaged in a conflict, in which they earnestly desire that grace may obtain full and speedy victory. And those who desire thus to give themselves up to be led by the Holy Spirit, are not under the law as a covenant of works, nor exposed to its awful curse. Their hatred of sin, and desires after holiness, show that they have a part in the salvation of the gospel. The works of the flesh are many and manifest. And these sins will shut men out of heaven. Yet what numbers, calling themselves Christians, live in these, and say they hope for heaven! The fruits of the Spirit, or of the renewed nature, which we are to do, are named. And as the apostle had chiefly named works of the flesh, not only hurtful to men themselves, but tending to make them so to one another, so here he chiefly notices the fruits of the Spirit, which tend to make Christians agreeable one to another, as well as to make them happy. The fruits of the Spirit plainly show, that such are led by the Spirit. By describing the works of the flesh and fruits of the Spirit, we are told what to avoid and oppose, and what we are to cherish and cultivate; and this is the sincere care and endeavour of all real Christians. Sin does not now reign in their mortal bodies, so that they obey it, Ro 6:12, for they seek to destroy it. Christ never will own those who yield themselves up to be the servants of sin. And it is not enough that we cease to do evil, but we must learn to do well. Our conversation will always be answerable to the principle which guides and governs us, Ro 8:5. We must set ourselves in earnest to mortify the deeds of the body, and to walk in newness of life. Not being desirous of vain-glory, or unduly wishing for the esteem and applause of men, not provoking or envying one another, but seeking to bring forth more abundantly those good fruits, which are, through Jesus Christ, to the praise and glory of God.