Five Helpful Marks to See If Someone Has Changed

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Transformation is one of the most frequently claimed yet most difficult to discern realities in the Christian life. Everyone says they have changed, want to change, or are trying to change. But discerning actual, Spirit-empowered transformation is another matter entirely. The problem is not that people lie, though they sometimes do. The problem is that people often confuse temporary behavioral adjustments with true gospel transformation. They stop doing something for a while, reorganize their habits, or feel a rush of motivation after a scare, and they call it repentance. But biblical repentance that is a Spirit-born, gospel-shaped renovation of the heart change produces long-term fruit that is observable, measurable, and impossible to manufacture by self-will alone. Scripture does not leave us guessing. Paul gives us the clearest framework for discerning whether someone has authentically changed. And to set the stage, we begin with two old friends: Biff and Mable.

Biff’s sin had surfaced again, and after a painful stretch of tension, deceit, and cold-hearted withdrawal, he confessed. His words were the same ones Mable had heard dozens of times: “I’m sorry. I’ll do better. I mean it this time.” And once again, she wanted to believe him. She wanted to loosen the vise-grip around her heart and open the door to hope, so she could trust the husband she married would emerge from the rubble of his repeated failures. But Mable also knew the cycle: a few peaceful days, a temporary change in attitude, a short-lived burst of effort, and then a return to the same old patterns. Her fear of being duped again made her cautious and even resentful that she was being asked to trust a man who had not been trustworthy.

Her question is the same one many Christians ask: “How can I know if someone has truly changed?” It’s not cynicism. It’s the humble cry of someone who wants to guard their heart wisely without becoming hard-hearted. And the answer is found in the wisdom of Paul’s instructions in Ephesians. When he told believers to put off their old self, be renewed in the spirit of their minds, and put on the new self (Ephesians 4:22–24), he was not speaking to unbelievers. He was addressing regenerated, Spirit-indwelt Christians who still wrestled with sin. His counsel presumes that saved people still have a former manner of life. It’s that gravitational pull back toward foolishness, anger, lust, deception, self-protection, and despair.

This reminder is essential when evaluating change because it levels the playing field: Christians do sin. Mable, fearful as she was, needed to remember that the presence of sin in Biff’s life did not automatically negate the presence of grace. Paul wrote to believers who were tempted to walk like the Gentiles around them (Ephesians 4:17). He recognized the tension between saint and sinner. His solution was not fear or suspicion, but a clear threefold pattern: put off, renew, put on. Paul saw repentance not as a moment of sorrow but as a movement of the soul. It is a Spirit-empowered shift from old desires to gospel-fueled obedience.

This is why his logic is sequential. First, he speaks of putting off the former manner of life (v. 22). This is the initial act of repudiating sin, naming it as God names it. Second, he identifies the need to renew the spirit of the mind (v. 23). This is where transformation truly takes shape, because sin is more than behavior; it is belief. And third, he describes the necessity of putting on a new self that reflects the likeness of Christ in tangible righteousness and holiness (v. 24). This threefold sequence gives us the first three marks of genuine repentance: (1) the person is actively putting off the former manner of life; (2) the person is actively renewing the spirit of their mind—the inner beliefs, desires, motives, and assumptions that drive their behavior; (3) the person is actively putting on a new lifestyle marked by righteousness and holiness.

But Paul does not stop there. He moves from theology to practicality by giving four real-life examples of what real repentance looks like. He describes a liar who not only stops lying but begins telling the truth in ways that bless others (v. 25). He describes a thief who does not merely stop stealing but begins working and giving generously (v. 28). He describes someone whose corrupting speech once tore down others, who now speaks words that build them up (v. 29). And he describes a bitter, harsh, angry person who does not merely restrain their irritability but becomes kind-hearted, tender, and forgiving (v. 31–32). These illustrations give us Paul’s fourth mark of true change: (4) the person is actively living out righteousness and holiness in functional, relational ways. It is not just behavior modification, but Spirit-empowered transformation that benefits others.

But the crowning mark, which is the hinge on which every other mark hangs, is the one found in the very last phrase of verse 32: “as God in Christ forgave you.” Paul is tying the entire concept of change to a gospel motive. This gives us the fifth mark: (5) the gospel is the sustaining motive for the person’s repentance. Without this final mark, the others will crumble over time. Anyone can do good works. Anyone can stop lying for a while or behave kindly when things are calm. But unless the engine of change is rooted in gratitude for Christ’s forgiveness, the change will not endure.

This is crucial for someone like Mable to understand because she is not just looking for good behavior; she is looking for reliable fruit. Good behavior can deceive, and Mable has seen that firsthand. But gospel-motivated transformation is impossible to fake in the long term. It rises from a changed heart, not a panicked conscience. It survives when no one is watching because it is anchored in Christ, not fear of consequences. True repentance is not a sprint but a long obedience in the same direction, marked by a steady gravitational pull toward holiness.

When Paul explained these marks, he gave us a framework for discernment that protects us from two dangers: naïveté and cynicism. Naïveté believes every apology and every promise of change without discernment. Cynicism believes no one ever changes and views every attempt at obedience with suspicion. The Bible rejects both extremes. Love “believes all things and hopes all things,” but love also refuses to be naive about the deceitfulness of sin (1 Corinthians 13:7; Hebrews 3:13). The gospel trains us to walk the narrow path between gullibility and guardedness.

To walk this line well, we must understand not only the marks of true repentance but the reasons why repentance may be absent. After all, a lack of change may not be rebellion. It may be ignorance, immaturity, blindness, or weakness. This is where Paul’s pastoral wisdom meets the gritty reality of life in a fallen world. Before concluding that someone has not repented, we must humbly consider why repentance may be delayed or distorted. There are six possibilities.

1. The first possibility is that the person may not know how to repent. This statement might surprise many Christians. We assume repentance is intuitive, but it is not. Repentance must be learned, explained, modeled, and practiced within the community of faith. Even the Ethiopian eunuch, with the Scriptures open on his lap, needed Philip’s help to understand what he was reading. Similarly, many believers have good intentions but lack the categories necessary to change deeply and biblically. They confess sin in general terms, express sorrow, and vow to improve, but they do not know how to walk through the process of putting off, renewing the mind, and putting on. They need instruction, modeling, and accountability rather than condemnation.
2. The second possibility is that an alluring sin may have caught the person. The language Paul uses in Galatians 6:1 is vivid. A person can be “caught” in a trespass, trapped like an animal caught in a snare. This does not excuse sin, but it explains why some people struggle to break free. The patterns of sin may be deeply ingrained. The desires may be overpowering. The habits may be decades old. Such individuals are not enemies. They are captives. And captivity requires rescue, not ridicule. Biff may have been caught by a longstanding pattern of self-pity, anger, porn, entitlement, or deceit. Simply demanding change without coming alongside him in love would be unbiblical and unkind.
3. The third possibility is that God may be maturing the person who is watching the slow pace of change. This was certainly true for Mable. She wanted Biff to change, but the Lord was using Biff’s slowness to expose her own unbelief, fear, self-protection, and desire for control. She needed to grow, too, so she could learn patience, humility, and trust. Sometimes the delay in someone else’s change is God’s merciful pressure on us, revealing our own misplaced hope.
4. The fourth possibility is that God may be asking the watching person to embrace their calling to love faithfully, even if the other person does not change. First Peter 2:21 reminds us that suffering may be part of our calling. This is not defeatism. It is realism. Some marriages do not change for years. Some children wander. Some friends persist in foolishness. In those moments, the question becomes, “Will I obey God even if the other person remains unchanged?” This is the cruciform shape of love.
5. The fifth possibility is that a person’s lack of repentance is being used by God to reveal idolatry in the observer’s heart. What we need will control us. If Mable believed she needed Biff to change to be okay, then Biff had become her functional god. Only the Lord can bear the weight of our ultimate trust. A lack of repentance in someone close to us exposes the deep places where we demand comfort, control, respect, affection, or security. These desires may be good, but when they rule us, they corrupt us. God uses disappointment to reveal these heart-level allegiances.
6. And finally, the sixth possibility is that the watching believer must anchor themselves in the goodness of God regardless of outcomes. Moses persevered with Pharaoh because he trusted the invisible God who was working behind the scenes. We must do the same. Repentance is ultimately God’s work. Only He grants repentance (2 Timothy 2:25). Our responsibility is faithfulness, not omniscience.

These six possibilities remind us that transformation is multidimensional. It is not merely about the offending spouse repenting; it is about the observing spouse trusting, waiting, hoping, loving, and resting in God’s sovereign care. It is about humility on both sides. And it is about discerning repentance, not through fear or suspicion but through the clear, gospel-shaped marks Paul gives us.

When Paul gave us these five marks of genuine transformation, he was not handing us a diagnostic checklist to weaponize against one another. He was giving us a grace-filled framework to help us discern what the Spirit of God produces in the life of a repentant believer. Discernment is essential because real transformation involves more than stopping sin; it involves becoming someone different. And for someone like Mable, the question is not whether Biff said he was sorry, or even whether he cried. Her question is whether the Spirit of God has genuinely moved inside him.

The first three marks—putting off the former manner of life, renewing the mind, and putting on a new Christlike lifestyle—are internal, invisible movements that become visible over time. The fourth mark—functional righteousness and holiness—makes repentance observable. But the fifth mark—gospel motivation—is the deepest test of all, because it reaches the heart’s engine. A person may appear to change for any number of reasons: fear of consequences, desire for peace at home, longing to be seen as spiritual, pressure from a spouse, pressure from a pastor, fear of losing reputation, or sheer exhaustion. But only one motive produces sustainable transformation: gratitude for Christ’s mercy.

This truth invites us to examine the inner posture of a repentant person. One of the reasons Mable struggled to believe Biff’s repentance was that she saw no sustained humility. She saw sorrow, yes. She saw apologies, yes. She saw temporary improvements, yes. But she did not see the kind of humility that welcomes correction, confesses quickly, embraces accountability, or pursues community. She saw him stop sinning, at least behaviorally, but she did not see him practicing the hard work of putting on something new. This distinction matters because repentance is not merely renunciation; it is replacement. Paul’s illustrations make this abundantly clear.

When a liar stops lying but does not begin speaking the truth in love, he has not repented. When a thief stops stealing but does not labor faithfully and give generously, he has not repented. When someone stops blowing up in anger but does not start speaking words that edify, he has not repented. When a bitter person stops sulking but does not become kind-hearted and forgiving, he has not repented. Repentance must replace sin with righteousness. This is why the most reliable indicator of change is not the absence of an old sin but the presence of a new righteousness.

Mable’s fear was understandable. Her heart had been hurt deeply and repeatedly. But she also needed to mature in her understanding of repentance. Her desire for assurance was not wrong. Her desire for control was. Her assumption that she could guarantee her safety if Biff reached a certain threshold of change was both unrealistic and subtly idolatrous. She wanted repentance to work like an insurance policy: “If he changes enough, I can rest.” But her rest was to be found in God, not Biff. The Lord would sustain her, even if Biff faltered. Her peace was not tied to his performance but to God’s goodness.

This brings us to a vital truth: repentance requires time, and trust requires even more time. Forgiveness may be immediate; trust is not. Paul never says, “Believe anyone who says they changed.” He gives us a framework that requires observation, reflection, conversation, and dependence on the Holy Spirit. Trust is a fragile thing. Once broken, it must be rebuilt plank by plank, word by word, step by step, over months and even years. God does not shame us for needing time. He simply warns us to use that time in a faith-filled, not fear-driven way.

It is in this slow rebuilding process that the five marks become precious. They give us a way to discern change without playing God. They give us something objective to look for without reducing sanctification to a formula. Anyone can muscle through behavioral changes for a few weeks. No one can manufacture Spirit-born holiness for long. It is too costly. It requires dying daily: humility, confession, courage, teachability, and dependence on Christ. These things cannot be faked. As Biff slowly began to grow—however imperfectly—these were the very evidences Mable began to see. Not flashy transformation, not perfection, not flawless consistency, but a new humility that softened his tone and made him approachable.

And even as these changes emerged, Mable’s heart was being changed, too. She realized that her greatest problem was not Biff’s slowness but her own unbelief. She had tied her safety, hope, peace, and security to her husband’s behavior rather than her Savior’s character. She had forgotten that God works through weakness, including the weakness of a spouse who is slow to mature. Her task was to respond in faith, not fear. This dual transformation—God changing the one who sinned and God changing the one who was sinned against—is the miracle of gospel-centered repentance. And it brings us to a sobering but liberating truth: repentance is ultimately God’s work, not ours.

We can explain, counsel, teach, pray, encourage, and shepherd, but we cannot grant repentance to anyone. Only God can. The moment we try to control someone else’s repentance, we place ourselves in God’s position and begin to manipulate outcomes. We force timelines, demand conformity, and collapse into fear when change is slow. But God’s timing is perfect. This is why Paul anchors repentance in the gospel. “As God in Christ forgave you” is not an inspirational tagline. It is the very power that keeps change alive. When the gospel motivates repentance, the repentant person is not changing for you; they are changing for Christ. They are not asking, “What will people think?” They are asking, “What will honor Christ?” That motive—rooted in gratitude for His mercy—produces a different breed of obedience entirely.

When Mable finally understood this, her posture softened. She became less of a parole officer waiting for Biff to mess up and more of a fellow pilgrim walking beside him in mutual need. She no longer held him hostage to an unspoken performance standard but prayed that the gospel would awaken his heart. And she stopped expecting him to give her the peace that only Christ could provide. This shift liberated her from fear and freed her to observe Biff’s growth with humility rather than suspicion.

Paul’s five marks protect us from despair when someone is slow to change and protect us from foolishness when someone only appears to change. They give us lenses to see God at work, whether through conviction, confession, humility, new patterns of obedience, or gospel-rooted motives. And they give us hope because they remind us that authentic repentance is not fragile or fleeting. It is the fruit of God’s Spirit, and He completes the work He begins.

All of this sets the stage for the practical work you must now do. Discernment is not passive. It is active. It is prayerful. It is humble. And it requires you to examine your own heart at least as much as you examine anyone else’s. With that in mind, it’s time to move toward the CTA.

Call to Action

Before you move on to the next chapter, press pause. Slow your mind. Let the Spirit examine you. The goal here is not merely to assess someone else’s repentance but to discern whether the gospel has taken deep root in your own heart. Use Paul’s five marks as a mirror. Start first for yourself, then for the people you shepherd.

1. Are you actively putting off your former manner of life, or have you settled for behavior management rather than transformation? Where do you still justify, excuse, hide, or minimize sin? What do you blame on stress, personality, hormones, or circumstances that God simply calls sin?
2. Is the spirit of your mind being renewed daily, or are you operating on yesterday’s grace, yesterday’s insight, and yesterday’s conviction? What thoughts dominate your inner world—fear, resentment, entitlement, suspicion, self-pity? Or the truth of Scripture?
3. Are you consistently putting on new Christlike behaviors, or do you simply stop doing sinful things without replacing them with righteous ones? Where must obedience become active rather than passive?
4. Is your repentance benefiting the people around you? Would your spouse, children, friends, or coworkers say you are becoming increasingly tender, truthful, generous, forgiving, and edifying?
5. Are your motives gospel-rooted or fear-rooted? Are you changing because you fear consequences, or because you love Christ? Are you obeying because you’re terrified to mess up, or because the mercy of Christ has melted your heart?
6. When you evaluate someone else’s repentance, are you discerning or demanding? Are you expecting perfection from others while overlooking your own immaturities?
7. Where is God calling you to trust Him more deeply? Whose slow repentance is exposing your impatience, anxiety, or unbelief?
8. Are you resting in God’s sovereignty over someone else’s timeline of change, or are you secretly trying to play the Holy Spirit? What attempts to control outcomes need to die today?
9. If someone close to you never changes, would Christ still be enough for you? Or have you built your emotional stability on a person rather than on the Lord?
10. What one step of obedience is the Spirit calling you to take today? Not ten steps. One. What is it?

Write your answers. Pray through them. Share at least one answer with a trusted friend. Let this chapter mark a turning point, not merely in your understanding of repentance but in your practice of it.

Final Exhortation

Beloved friend, you do not walk this path alone. The Spirit who raised Christ from the dead is the same Spirit who renews your mind, empowers your obedience, convicts your heart, and sustains your repentance. You are not the hero of your story; Christ is. And He delights to transform weak, fearful, inconsistent sinners into trophies of grace.

Do not lose heart when repentance feels slow. Do not despair when you fail. Do not demand perfection from others. And do not settle for the appearance of change. Lift your eyes to the Savior who forgives you, sustains you, and reshapes you from the inside out. He is patient. He is powerful. He is faithful. And He is not finished with you—or with the people you love. Walk by faith. Watch for the five marks. Trust the Spirit. And cling to Christ. He will complete the work He began.

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Rick Thomas

Rick launched the Life Over Coffee global training network in 2008 to bring hope and help for you and others by creating resources that spark conversations for transformation. His primary responsibilities are resource creation and leadership development, which he does through speaking, writing, podcasting, and educating.

In 1990 he earned a BA in Theology and, in 1991, a BS in Education. In 1993, he received his ordination into Christian ministry, and in 2000 he graduated with an MA in Counseling from The Master’s University. In 2006 he was recognized as a Fellow of the Association of Certified Biblical Counselors (ACBC).