Grow in Grace: Standing Firm in 2 Peter 3:17-18
Short answer: To grow in grace is to live out, day by day, the salvation God has already given in Christ. In 2 Peter 3:17-18, Peter tells his readers to be on guard against error and to grow in the grace and knowledge of Jesus. Growth is not earning salvation; it is the natural response of a person who has received it. Grace is God's undeserved kindness in Christ, and growing in it means learning to trust, obey, and treasure Him more deeply over time. This growth happens through ordinary means: Scripture, prayer, fellowship, repentance, and faithful endurance. It is God who keeps us, and it is God who causes growth. Our part is to stay awake, stay rooted, and keep moving forward.
What 2 Peter 3:17-18 Was Written to Correct
Peter's second letter closes against a backdrop of confusion. False teachers had crept in, mocking the promise of Christ's return and twisting Paul's letters, which Peter acknowledges are sometimes hard to understand. His readers were not in an academic debate; they were in danger of being shaken. So Peter writes as a pastor, not a lecturer. He reminds them that they already know the truth and warns them not to be swept away from their own firm footing. The command to grow in grace is set right beside the command to beware. Growth and vigilance belong together in the Christian life.
The immediate danger Peter names is being carried away by error. He does not say the readers were already fallen; he says they could be. That means steadfastness is not a permanent, automatic state. It is a posture we hold by God's help, and it can be loosened by inattention. This is why Peter appeals to what they already know. Doctrine is not a distraction from growth; it is the soil of it. A believer who stops paying attention to truth will not grow for long. The warning and the encouragement are two sides of the same pastoral care.
Peter also writes with the end in view. The whole letter anticipates the day of the Lord, when the heavens will pass away and the earth will be laid bare. In light of that day, he asks what kind of people we ought to be. Growth in grace is not a self-improvement project; it is readiness. It is the way a person waits for Christ. The believer who grows is not trying to secure God's favour, but is living like someone who knows the Lord is coming and wants to be found faithful. That future hope shapes ordinary obedience in the present.
Notice the tenderness of the address. Peter calls his readers beloved. He is not scolding them as rebels; he is warning them as family. This matters for how we hear the passage. Growth in grace is not a grim duty imposed by a distant God. It is the invitation of a Shepherd who knows the wolves are real. The command to grow is protective. It is given because Peter loves these people and does not want them to be deceived or to drift. When we feel the weight of the warning, we should also hear the warmth of the love behind it.
Growing in Grace Is Not the Same as Earning Grace
One of the common misunderstandings about growth is that it is the way we repay God for salvation. The New Testament never treats growth that way. Grace is by definition undeserved, and it is received by faith, not produced by effort. Ephesians 2:8-9 makes the point plainly, and the article linked below works through it carefully. If growth were the price of salvation, grace would no longer be grace. But because salvation is a gift, growth becomes the fruit of it. We grow because we are loved, not in order to be loved. This distinction guards the gospel and also makes real growth possible.
When growth is confused with earning, two errors follow. Some people become proud, quietly believing their maturity is their own achievement. Others despair, because they see how little they have grown and conclude God must be done with them. Both errors miss the nature of grace. The proud believer needs to hear that every good thing comes from above. The despairing believer needs to hear that God does not begin a work in order to abandon it. Philippians 1:6 says, "being confident of this very thing, that he who began a good work in you will complete it until the day of Jesus Christ." The work is His from start to finish.
This is why Peter can command growth without contradiction. If grace were merely a past transaction, a command to grow would be strange. But grace is also a present power. It teaches us, corrects us, and enables us. To grow in grace is to come more and more under the influence of the grace we already have. It is like a branch abiding in a vine: the life is not produced by the branch, but it flows through the branch. The branch's calling is to remain. Growth is not the manufacture of life; it is the enjoyment and outworking of life received.
Practically, this changes how we approach spiritual disciplines. We do not read Scripture, pray, or serve in order to make God love us more. We do them because He already loves us in Christ, and these are the places where His grace reaches us. The discipline is real and the effort is real, but the direction is different. We are not climbing toward God; we are walking with the God who came down to us. Understood rightly, this frees us to grow without anxiety and without pride.
Knowledge of Christ as the Soil of Growth
Peter joins grace and knowledge together: grow in the grace and knowledge of our Lord and Savior Jesus Christ. The two are not separate tracks. Grace is the atmosphere, and knowledge is the air we breathe in it. To know Christ is not merely to know facts about Him. It is to know Him as He is revealed in Scripture and to trust Him more deeply as a result. This is why sound teaching matters. Error about Christ inevitably stunts growth, because we cannot grow into a Christ we have misunderstood. Right knowledge of Him is the soil in which grace grows.
Hebrews 5:12-14 addresses a church that had stopped maturing. The author says they needed milk instead of solid food when they should have been teaching others. His concern is not intellectual snobbery; it is pastoral. Immaturity makes people vulnerable. They cannot discern good from evil, and they are easily led astray. This is exactly the danger Peter warns about. Growth in knowledge is not about accumulating information; it is about developing discernment. A mature believer can tell the difference between the voice of the Shepherd and the voice of a stranger.
Ephesians 4:14-16 describes the alternative to maturity: being tossed back and forth and carried about with every wind of doctrine. The image is of a small boat on open water, driven by whatever wind blows. Growing in knowledge anchors the believer. It does not make them rigid or unteachable; it makes them stable. A rooted tree can bend in a storm without being uprooted. So knowledge of Christ is not a cold intellectual exercise. It is the means by which love grows, because we cannot love someone we do not know, and the more we know of Christ's character, the more our love deepens.
This also means that growth is lifelong. No believer arrives in this life. The most mature Christian still has more to learn of the love of Christ which surpasses knowledge. That should keep us humble and keep us hungry. It should also keep us patient with others who are at different stages. If we are still learning, we can be gentle with those who are still learning too. Growing in the knowledge of Christ is not a race to finish but a relationship to enjoy. It is the happy occupation of the whole Christian life, and it never runs out.
The Warning Against Being Carried Away
Peter's word beware is not an overreaction. It is the realism of a man who has seen failure. He himself denied Christ, and he knew how quickly confidence can collapse. So he tells his readers to be on guard against being carried away with the error of the wicked, and falling from their own steadfastness. The phrase is gentle: their own steadfastness. This is not a foreign thing he is asking them to protect; it is the firm footing they already have. But it can be lost through carelessness. The warning is serious because the danger is real, and love speaks seriously about real dangers.
Being carried away rarely happens in a single dramatic moment. Usually it is gradual. A person stops gathering with God's people, stops reading, stops praying, and slowly the current moves them. Error is often attractive because it promises freedom or novelty. But Peter calls it the error of the wicked, not because every deceived person is wicked, but because the error leads away from the truth and into a life that dishonours God. The remedy is not paranoia but attentiveness. We guard our steadfastness the way a gardener guards a young tree: not by fear, but by care.
This is where the church matters. Peter writes to a community, and he expects them to help one another stand. No believer is meant to hold their footing alone. We are told elsewhere to stir one another up to love and good works, and not to neglect meeting together. Growth in grace is personal but not private. The mutual encouragement of believers is one of God's ordinary means of keeping us steady. When we isolate ourselves, we remove a protection God has given us. When we stay connected, we give and receive strength we could not have on our own.
The warning also keeps us from presumption. It is possible to assume we are standing while we are drifting. Paul warns those who think they stand to take heed lest they fall. That is not a lack of assurance; it is honesty about our weakness. Assurance rests on Christ's finished work, not on our own track record. But because we are still prone to wander, we stay watchful. Peter's readers are called beloved even as they are warned. The warning is not a threat to their standing; it is the means God uses to preserve it.
How Growth in Grace Actually Happens
If growth is not earning, how does it happen? The New Testament answers with ordinary means. Colossians 2:6-7 says, "As therefore you received Christ Jesus, the Lord, walk in him," and it speaks of being rooted and built up and established in the faith. The same way you received Him is the way you walk in Him: by faith. Growth is not a new technique; it is the continuation of the life that began when you first trusted Christ. That means the Christian life is not a series of restarts so much as a steady walk. The daily turning to Christ in trust is the daily growth in grace.
Scripture is central. Peter's readers are told to remember the words spoken beforehand by the holy prophets and the commandment of the Lord. The word of God is the food of growth. A believer who neglects Scripture will not grow, no matter how sincere they are. Prayer is equally central, because growth is a relationship, not a project. Confession and repentance clear the ground, removing the weeds that choke growth. Fellowship with other believers supplies encouragement and correction. These are not glamorous, but they are the ordinary channels through which God's grace reaches us. Faithfulness in small things over years is how deep roots form.
Endurance is also part of growth. Some seasons feel like flourishing; others feel like winter. But growth happens in winter too, underground, invisible. The believer who keeps trusting when they cannot see progress is growing. The believer who keeps obeying when they feel nothing is growing. God is not limited to the seasons we can measure. He is at work even in the waiting. This is why we should not judge growth only by emotional experience. Feelings are part of the Christian life, but they are not the whole of it. Faithfulness over time is the truer marker.
Finally, growth is directed toward a person: Jesus Christ. Peter ends his letter not with a rule but with a doxology: to him be the glory both now and forever. That is the goal of all growth. We are not growing into a better version of ourselves; we are growing into Christ. The end of the Christian life is not self-improvement but Christ-likeness, and the glory goes to Him. Every step forward is by grace, every good work is His work in us, and every bit of growth will one day be complete. To Him be the glory, now and forever.
Biblical fidelity check
This passage establishes that growth in grace and knowledge is commanded, that steadfastness can be threatened by error, and that God's grace is the ground of our security. It does not teach that believers can lose their salvation by any single failure, nor does it teach sinless perfection in this life. It also does not describe growth as automatic. Peter's imperatives assume effort and attentiveness. The passage holds together divine keeping and human responsibility, and we should not resolve the tension by cancelling either side. Faithful Christians differ on how to describe perseverance, but all agree that God is faithful and that we are called to keep walking.
A common misreading treats growth as a way to secure God's acceptance, as though our maturity earns His favour. That contradicts the gospel. Grace is undeserved, and salvation is a gift, not a wage. Another misreading treats the warning as meaningless because security in Christ is absolute. But Peter wrote the warning to believers, and it is meant to be heeded. The right response is neither complacency nor panic, but humble, watchful trust. We rest in Christ's finished work and we take seriously the call to grow, knowing that the God who keeps us also works in us.
Other passages that speak to 2 Peter 3:17-18
Several related passages fill out this theme. Ephesians 2:8-9 Meaning: Saved by Grace, Not by Works explains why grace cannot be earned and why growth is not payment. What Does 1 Peter 1:13 Mean? Context, Theology, and Application shows how hope shapes a disciplined, watchful life. What Does 1 Peter 1:15 Mean? Context, Theology, and Application connects growth with holiness in everyday conduct. And What Does 1 Peter 1:18 Mean? Context, Theology, and Application grounds our walk in the precious blood of Christ, purchased at great cost. Together these passages show that grace both saves and shapes us.
Frequently asked questions
What does it mean to grow in grace?
Growing in grace means living more and more in light of the undeserved kindness God has shown us in Christ. It is not earning salvation but learning to trust, love, and obey the Savior more deeply. It happens through ordinary means like Scripture, prayer, fellowship, repentance, and endurance. Colossians 2:6-7 says, "As therefore you received Christ Jesus, the Lord, walk in him," which shows that we continue in the same way we began: by faith. Growth is measured over years, not days, and its goal is Christ-likeness.
Can a believer lose their steadfastness?
Peter warns that believers can be carried away by error and fall from their own steadfastness, so the danger is real. That does not necessarily mean losing salvation, but it does mean drifting from stability and fruitfulness. Faithful Christians differ on how to describe final perseverance, and we should be humble where Scripture is not explicit. What is clear is that we are called to be watchful and that God is faithful to keep those who are His. The warning is meant to move us to dependence, not despair.
How do I grow when I feel spiritually dry?
Growth is not always felt. Seasons of dryness are common, and they do not mean God has abandoned you. Keep doing the ordinary things: read Scripture even when it feels flat, pray honestly, stay connected to a church, and keep repenting and believing. Feelings come and go, but God's promises do not. Philippians 1:6 says, "being confident of this very thing, that he who began a good work in you will complete it until the day of Jesus Christ." Trust His work, not your feelings, and keep walking.
