What does it mean that "whatever a man sows, that he will also reap" (Galatians 6:7, NKJV)? In this expository sermon on Galatians 6, Dr. Toby B. Holt walks verse by verse through Paul's closing charge: bear one another's burdens, do not be deceived because God is not mocked, and sow to the Spirit rather than to the flesh. Read in its Reformed context, the harvest principle describes the believer's sanctification and God's moral order, not a way of earning salvation. Dr. Holt shows how Paul refuses every other boast but the cross, where "the world has been crucified to me, and I to the world" (Galatians 6:14, NKJV).
0:00 — Whatever a Man Sows. The harvest of our lives matches our planting (Gal 6:7).
4:29 — Sowing to the Spirit. Sow to the Spirit and reap everlasting life (Gal 6:8).
15:05 — Don't Grow Weary in Doing Good. In due season we reap if we do not lose heart (Gal 6:9).
19:52 — Boast Only in the Cross. Paul glories in nothing but the cross of Christ (Gal 6:14).
29:58 — Take Up Your Cross. The new creation lives by dying daily to self (Gal 6:15–17).
Paul states a fixed moral order: "Do not be deceived, God is not mocked; for whatever a man sows, that he will also reap" (Galatians 6:7, NKJV). The harvest of our lives corresponds to what we plant. In Galatians this is not a way to earn salvation but a description of God's just government and the believer's sanctification. To think we can mock God by sowing to the flesh while expecting the Spirit's harvest is self-deception.
No. Paul has already insisted that justification is by faith alone in Christ, not by works of the law (Galatians 2:16). Calvin notes that though eternal life is called a reward, it does not follow that we are justified by works or that works merit salvation; God graciously crowns the very fruit His Spirit produces in us. The sowing-and-reaping principle describes the moral order God upholds and the believer's growth in holiness, never the ground of acceptance.
"For he who sows to his flesh will of the flesh reap corruption, but he who sows to the Spirit will of the Spirit reap everlasting life" (Galatians 6:8, NKJV). Sowing to the flesh means living for self and sinful desire; its harvest is decay and death. Sowing to the Spirit means walking by the Spirit who was given in regeneration. Spurgeon observed that the one who sows to the Spirit is led to repent, believe, and pursue holiness, taking no credit himself.
To mock God here is to imagine we can outwit His moral order, pretending to follow Christ while sowing to the flesh. "God is not mocked" (Galatians 6:7, NKJV) means He cannot be deceived or evaded; He sees the heart and brings every life to its true harvest. This is a sober warning against hypocrisy and a comfort that God governs the world justly. No sin escapes His notice, and no labor of love is forgotten.
"And let us not grow weary while doing good, for in due season we shall reap if we do not lose heart" (Galatians 6:9, NKJV). The Christian life is patient sowing, and the harvest often comes later than we wish. Paul anticipates the temptation to quit when good works bring no immediate reward. The promise is that God's appointed "due season" will come; perseverance in well-doing is itself a fruit of the Spirit, not a means of self-justification.
"Bear one another's burdens, and so fulfill the law of Christ" (Galatians 6:2, NKJV). Paul calls believers to share the weight of each other's struggles, especially restoring those caught in sin "in a spirit of gentleness" (Galatians 6:1, NKJV). The "law of Christ" is the law of love He embodied and commanded. This burden-bearing is the practical shape that sowing to the Spirit takes within the church, flowing from grace received, not merit earned.
"But God forbid that I should boast except in the cross of our Lord Jesus Christ" (Galatians 6:14, NKJV). Against opponents who boasted in circumcision, Paul glories in nothing but Christ crucified. Calvin explains that Paul glories in that shameful death because in it he obtains perfect salvation. The cross, not religious performance, is the believer's only ground of confidence, and it cuts off all human pride before God.
"For in Christ Jesus neither circumcision nor uncircumcision avails anything, but a new creation" (Galatians 6:15, NKJV). External religious marks count for nothing; what matters is the regenerating work of the Spirit that makes a person new in Christ. This new creation is God's sovereign work, not human achievement. It is the same grace by which the believer is justified by faith and then enabled to sow to the Spirit unto everlasting life.
"From now on let no one trouble me, for I bear in my body the marks of the Lord Jesus" (Galatians 6:17, NKJV). These marks are the scars of suffering and persecution Paul endured for the gospel. Unlike the circumcision his opponents prized, his wounds prove his union with the crucified Christ. They display a life conformed to the cross, the daily dying to self that follows the call to take up one's cross and follow Him.
Galatians as a whole defends justification by faith alone, apart from works (Galatians 2:16). The sowing principle of chapter 6 belongs to sanctification, the Spirit-wrought fruit of those already saved. The Westminster Confession (16.5-6) teaches that even believers' best works are accepted only in Christ, yet God is pleased to reward them. So the harvest is grace upon grace, never wages we have earned from God.
1. The Moral Order of Sowing and Reaping
God governs His world by a fixed principle: "Do not be deceived, God is not mocked; for whatever a man sows, that he will also reap" (Galatians 6:7, NKJV). The harvest of a life corresponds to its planting. In Galatians this describes God's just rule and the believer's sanctification, not a way to earn favor. To sow to the flesh while expecting the Spirit's reward is self-deception, for God sees the heart and cannot be evaded.
2. Sowing to the Spirit and Persevering in Good
The believer, renewed by the Spirit, is called to sow to the Spirit and "reap everlasting life" (Galatians 6:8, NKJV), refusing to grow weary in doing good (Galatians 6:9). This perseverance is itself the Spirit's fruit, not human merit. Calvin taught that though eternal life is called a reward, God graciously crowns the works His grace produces; the harvest is grace upon grace, never wages earned. Patient well-doing trusts God's appointed "due season."
3. Boasting Only in the Cross and the New Creation
Paul refuses every boast but one: "God forbid that I should boast except in the cross of our Lord Jesus Christ" (Galatians 6:14, NKJV). External religion avails nothing; "a new creation" is everything (Galatians 6:15). This new birth is God's sovereign work in the believer. The Christian lives by dying daily to self, taking up the cross, bearing in his very life the marks of union with the crucified and risen Lord Jesus.
The Scripture Text: Galatians 6:7-9, 14 (NKJV)
"Do not be deceived, God is not mocked; for whatever a man sows, that he will also reap. For he who sows to his flesh will of the flesh reap corruption, but he who sows to the Spirit will of the Spirit reap everlasting life. And let us not grow weary while doing good, for in due season we shall reap if we do not lose heart. ... But God forbid that I should boast except in the cross of our Lord Jesus Christ, by whom the world has been crucified to me, and I to the world."
Continue studying: explore the full Book of Galatians sermon series, or browse the complete Reformed Sermon Archive.

About The Speaker: Dr. Toby Holt serves as the third President of New Geneva Theological Seminary (Colorado Springs, CO), founded 1993. An expository preacher with over 1.9 million sermon downloads on SermonAudio.com, Dr. Holt brings over 17 years of pastoral experience to his verse-by-verse Bible teaching. New Geneva offers fully online Reformed theological education — M.Div., Th.M., D.Min., and other degrees.
Continue the verse-by-verse series.
