The Danger of Sanctification by Self-Effort (Sanctified by Faith Part 2)
Forgetting How We Began
In the Christian life, few truths are more freeing—and more easily forgotten—than this: we are sanctified by faith, not by flesh. The gospel that saves us is the gospel that changes us. And yet, over time, many believers can begin to drift from dependence on Christ toward dependence on self.
We know we are justified by faith (Ephesians 2:8–9). But do we live as though we are sanctified by faith as well? Or do we subtly begin to rely on our own effort to grow?
The apostle Paul speaks directly to this tension in Galatians 3:3: “Are you so foolish? Having begun by the Spirit, are you now being perfected by the flesh?” The Galatians had started well—trusting in the finished work of Christ—but were now attempting to grow through law-keeping and self-effort. They were trying to complete in the flesh what had begun in the Spirit. This is not just a first-century issue. It is a present-day struggle, and one that can easily be mistaken for spiritual maturity.
When Growth Becomes Performance
Sanctification by self-effort can look spiritual on the surface. It often includes disciplined habits, strong convictions, and visible progress. But underneath, it can be driven by a quiet assumption: that becoming holy ultimately depends on us.
Over time, this approach becomes spiritually dangerous.
It shifts our focus away from Christ. Instead of looking to Him as our source of life and strength, we begin to look inward, measuring our growth by our performance rather than His grace.
It produces either pride or discouragement. When we feel we are succeeding, we can become self-reliant. When we struggle, we can become discouraged or weighed down by guilt. In both cases, our confidence begins to rest in ourselves rather than in Christ.
And it leads to exhaustion. Trying to carry the weight of sanctification on our own was never what God intended. The Christian life was not designed to be sustained by willpower.
The Way of Grace
Jesus offers a different way. In Matthew 11:28–30, He says, “Come to me, all who labor and are heavy laden, and I will give you rest… For my yoke is easy, and my burden is light.” This invitation is not only for the beginning of the Christian life—it is for every day of it.
Sanctification is not something we carry alone. It is something Christ works in us through His Spirit.
Philippians 2:12–13 captures this beautifully: “Work out your own salvation with fear and trembling, for it is God who works in you, both to will and to work for his good pleasure.” We are called to act, but our action flows from God’s work within us. We strive, but not in isolation. Our effort is real, but it is sustained by grace.
Holding Fast to Grace
Paul’s words in Galatians 2:21 remind us what is at stake: “I do not nullify the grace of God, for if righteousness were through the law, then Christ died for no purpose.” When we attempt to grow apart from grace—when we rely primarily on our own strength—we begin to function as though grace is no longer central.
But Scripture consistently points us back to Christ. Hebrews 12:2 calls Him the author and finisher of our faith. Romans 8:29 reminds us that our transformation is rooted in God’s purpose. And 2 Corinthians 3:18 shows that we are changed as we behold the glory of the Lord—not as we fixate on ourselves.
Grace-Driven Effort
None of this means that sanctification is passive. Growth requires effort, discipline, and obedience. But it is effort that flows from faith, not from fear or self-reliance.
We do not earn holiness—we walk in it. We do not produce transformation—we participate in what God is already doing.
Paul describes this balance in Colossians 1:29: “For this I toil, struggling with all his energy that he powerfully works within me.” This is the heart of sanctification by faith: we work, but we work with His strength. We pursue obedience, but we do so as those already united to Christ.
Returning to the Gospel Daily
So what does this look like in everyday life? It means returning to the gospel again and again.
It means reminding ourselves that we are accepted because of Christ, not because of our performance. It means trusting that the Spirit is at work within us, even when growth feels slow. It means recognizing that we are not alone in the fight against sin.
Ultimately, it means believing that God will complete what He has started (Philippians 1:6).
We do not need a new method—we need deeper trust. The gospel does not only bring us into the Christian life; it carries us through it. So we return to Christ, again and again, and learn to walk by faith.
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