Matthew 28:18-20 Explained: Teaching Them to Observe
Short answer: In Matthew 28:18-20 the risen Jesus grounds everything that follows in his own authority, then sends his apostles to make disciples of all nations, baptizing them and teaching them to observe all things he commanded. The word observe is not about a passing glance; it means to keep, to hold fast, to practice. So the church's task is not finished when people have heard the facts about Jesus or even been baptized. The commission presses on to formation: teaching new disciples to actually do what Jesus said. That teaching is measured by Jesus' own commands, not by the teacher's preferences, and it depends on Jesus' continuing presence with his people until the end of the age. Baptism and teaching belong together as the two named activities that accompany discipleship.
What Jesus Actually Says in Matthew 28:18-20
The setting is a mountain in Galilee after the resurrection. Matthew notes that when the eleven saw Jesus they worshiped him, though some doubted. Into that mixed company Jesus comes and speaks with total composure. He does not begin with a command but with a claim: all authority has been given to me in heaven and on earth. Every verb that follows rests on that foundation. The one speaking is not a teacher offering suggestions but the risen Lord whose jurisdiction is universal. This matters for the whole commission because commands carry weight according to the authority of the one who gives them. When Jesus tells his apostles to make disciples, he does so as the one to whom heaven and earth have been handed over.
The main verb, make disciples, governs the two participles that follow: baptizing and teaching. That grammatical shape is worth noticing. Jesus does not give three separate assignments of equal rank; he gives one assignment with two accompanying actions. Making disciples is the aim; baptizing and teaching are the ordinary means. Baptism marks the entry of a person into the visible community of disciples, publicly identifying them with the Father, the Son, and the Holy Spirit. Teaching then continues the work, carrying the disciple from the beginning of faith into a whole life shaped by Jesus' words. Both actions are necessary, and neither can substitute for the other.
Then comes the phrase this topic turns on. Jesus says the apostles are to teach disciples to observe all things that he commanded them. The word observe means more than mental agreement; it carries the sense of keeping, guarding, practicing. A disciple who has been taught but does not do what Jesus said has not yet reached the goal of the commission. This is the same logic James presses when he tells his readers to be doers of the word and not only hearers, deluding their own selves, as James 1:22 puts it. Teaching that stops at information has stopped short of what Jesus commissioned. The goal is observance, a life that has been shaped.
Finally, Jesus closes with a promise: he is with his disciples always, to the end of the age. The task is immense, the nations are many, and the opposition is real, but the one who sends is the one who stays. Notice that the promise is attached to the mission, not to comfort in general. Where disciples are made and taught, Jesus says he is present. Where his commands are handed on faithfully, he stands with those who do the handing on. That promise has carried the church through two thousand years of uneven, often costly obedience, and it still holds for teachers and new believers alike.
Authority: Why the Commission Begins Where It Begins
It is easy to rush past the opening clause of the commission to get to the verbs, but the verbs are unintelligible without it. Jesus says that all authority in heaven and on earth has been given to him, as Matthew 28:18 records. The scope is deliberately total. Nothing is carved out as outside his jurisdiction, no nation, no sphere of life, no corner of a person's existence. When a teacher stands before a new disciple and says that Jesus commands this or that, the teacher is not appealing to tradition or preference. The teacher is appealing to the highest authority there is, exercised by the one who died and rose and now reigns.
This also explains why the content of teaching is bounded. If Jesus has all authority, and if disciples are to be taught to observe what he commanded, then the teacher's own ideas cannot be added to the curriculum. The temptation is always to teach our own convictions with the same weight as Jesus' words, whether those convictions are cultural, denominational, or personal. Some of those convictions may be wise and worth holding, but they are not the measure of discipleship. The measure is what Jesus commanded. A faithful teacher keeps that line clear, teaching the commands of Christ as Christ's, and holding personal opinions as opinions.
Authority also supplies courage. The apostles were a small, unimpressive group facing a world of empire, synagogue, and temple. By every human measure they should have been ignored. But the one sending them held all authority, so their message carried a weight out of proportion to their numbers. The same is true wherever the gospel is faithfully taught today. A Sunday school teacher, a parent at a kitchen table, a pastor in a small congregation is not relying on personal charisma. They are speaking on behalf of the one to whom all authority has been given, and that is enough.
And authority means accountability runs in one direction. The disciple is accountable to Jesus' commands. The teacher is also accountable, and perhaps more strictly, for whether what is taught is actually what Jesus commanded. James warns that teachers will be judged with greater strictness, a sobering word for anyone who stands before others with a Bible open. The authority of Christ does not elevate the teacher; it puts the teacher under the words being taught. The best teachers are those most conscious that they too are disciples under the same commands they hand on to others.
Make Disciples: The Aim of the Whole Sentence
The central imperative is make disciples. It is not make converts, though conversion belongs to it; not make attendees, though gathering matters; not make decisions, though decisions are often real. It is make disciples, people who are learning from Jesus and following him. The word carries the sense of an apprentice, someone who is with a master and is being formed by that master over time. That means the commission is inherently patient work. It cannot be completed in a single conversation or a single service. It stretches across months and years, through failures and growth, through questions and slow change.
This is why teaching follows baptizing in the sentence. Baptism marks the beginning of a public life with Jesus. Teaching is what happens after that beginning, for the rest of a disciple's life. A church that baptizes people and then loses interest in them has done half the commission. A church that teaches people without ever calling them to baptism has also stopped short. The two belong together: an entry point into the community and a long, patient catechesis within it. The book of Acts shows this pattern repeatedly, as new believers are gathered, taught, and formed in congregations.
Making disciples is also a corporate task, not merely the work of specialists. The commission was given to the apostles, but the pattern of baptism and teaching has always been carried out by the whole church. Colossians 3:16 describes the congregation letting the word of Christ dwell richly and teaching and admonishing one another with psalms, hymns, and spiritual songs. That is mutual discipleship: every believer contributing to the formation of others. Some are gifted as teachers, but no disciple is exempt from the work of helping others follow Jesus, and no disciple is too new to help someone even newer.
All nations is the scope. The phrase pushes against every instinct to limit the mission to people like us, near us, or already inclined to listen. The gospel is for the nations, which means crossing boundaries of language, custom, and comfort. It also means that within a single city there are nations at the doorstep. A church that takes this seriously will be sending and going, supporting and praying, welcoming and teaching, until the good news has reached the peoples Jesus had in view when he spoke these words.
Observe: The Word That Changes Everything
The Greek word behind observe means to keep, to guard, to preserve, to hold fast. It is the word used elsewhere for keeping commandments, keeping a trust, keeping watch. It is active and practical. To observe all things Jesus commanded is not to admire them, memorize them, or discuss them well. It is to do them. A disciple who knows the Sermon on the Mount but does not practice it has observed nothing. A disciple who can recite Jesus' teaching on forgiveness but nurses a grudge has observed nothing. The word drags teaching out of the classroom and into the ordinary places of life.
This is exactly the point James makes. He writes that a person who hears the word and does not do it is like someone who looks in a mirror, goes away, and immediately forgets what he looked like. The hearer who acts, by contrast, looks into the perfect law of liberty and continues in it, and is blessed in what he does. Knowledge that never reaches the hands and feet is a kind of self-deception, and James names it bluntly. That is a searching standard for every teacher: the question is not merely did the class understand, but did the teaching produce doing.
Observing all things also rules out selective obedience. Jesus says all things that he commanded, not the convenient parts, not the parts our culture already agrees with, not the parts that suit our temperament. This is where honest teachers must be careful not to shape the curriculum around what an audience will find palatable. Jesus' commands include hard things: love your enemies, deny yourself, forgive without limit, speak truth, give generously, humble yourself. All of them fall within the scope of what must be taught and observed. A teaching ministry that consistently avoids the difficult commands is not fulfilling the commission, however pleasant it may be.
Observing all things is lifelong. No disciple reaches the end of it in this life, which is why teaching never stops. The goal is not a checklist completed but a life increasingly conformed to Jesus. That means patience with slow learners, including ourselves, and perseverance when growth is uneven. It also means that the commission has no retirement. As long as a disciple lives, there is more of Christ's teaching to understand and more of it to practice, and there is always someone nearby who needs help taking the next step.
Commandment-Keeping as Love, Not Legalism
Some readers hear the phrase teaching them to observe and immediately fear a cold, rule-bound religion. Jesus himself rules that out. He says, If you love me, keep my commandments, as John 14:15 records. The keeping flows from love, not from a calculation of reward or fear of punishment. The commandments are the shape love takes when it becomes visible. A disciple who obeys because he loves Jesus is not a legalist; he is a person whose affection has found hands and feet. And the commands themselves are not arbitrary restraints but the wise instruction of the one who made us and knows what flourishes and what destroys.
John presses the same point in John 14:21, where Jesus says that one who has his commandments and keeps them is the one who loves him, and that such a person will be loved by the Father and will have Jesus revealed to him. Obedience here is not the price of love but the evidence of it, and it is met with further revelation. There is a reciprocal dynamic in the Christian life: the disciple who does what Jesus says comes to know him more deeply. This is why teaching obedience is not a distraction from knowing Jesus; it is one of the means by which he makes himself known.
Paul's language in 2 Timothy 3:16-17 supplies the framework for this kind of teaching. He writes that every Scripture is God-breathed and profitable for teaching, for reproof, for correction, and for instruction in righteousness, so that the person belonging to God may be complete, equipped for every good work. Notice the four purposes. Teaching is not all encouragement; reproof and correction are named, which means faithful teaching will sometimes say plainly that a course of action is wrong. The aim, though, is constructive: instruction in righteousness, so that people are equipped to do good, not merely ashamed of what they have done.
Colossians 3:16-17 puts this in the setting of a congregation's shared life. The word of Christ is to dwell richly among them, and they are to teach and admonish one another with psalms, hymns, and spiritual songs, singing with grace in their hearts to the Lord. That is a picture of teaching that is warm, musical, corporate, and grace-soaked, not harsh or mechanical. Whatever we do, Paul adds, whether in word or deed, is to be done in the name of the Lord Jesus, with thanksgiving. Teaching obedience, rightly done, has that texture: serious about the commands, full of grace, and grateful.
How Teaching That Produces Observance Actually Works
If the goal is observance, teaching methods have to serve that goal. Explanation alone will not do it. A disciple needs to hear what Jesus commanded, understand why it matters, see it modeled, attempt it, and be corrected and encouraged when he tries. That is slower than delivering content, and it requires relationship. This is one reason Jesus himself spent three years with twelve men rather than simply publishing a syllabus. He taught, showed, sent them out, debriefed them, and kept teaching. The pattern is worth imitating in families, small groups, and one-to-one relationships as well as in preaching.
Repetition is not a sign of failure. Because we forget and drift, the same commands must be returned to again and again. A congregation that hears Jesus' teaching on money, or anger, or prayer, once a year and never again has little reason to expect change. The teacher's task is closer to a gardener's than a lecturer's: planting the same seed in season and out of season, watering, waiting, and tending. The commission assumes this patient cycle and gives no timetable. Faithfulness in teaching is measured over years, and often the fruit appears long after the teacher has moved on.
Application must be specific. Teaching to observe means helping people see where a command touches Monday, not just Sunday. If Jesus commands forgiveness, the disciple needs help naming the person he is avoiding. If Jesus commands generosity, the disciple needs to look at an actual budget. If Jesus commands truth, the disciple needs to consider a particular conversation. General encouragement produces general intentions; specific teaching produces actual steps. Good teachers learn to ask the question that moves the truth from the ear to the hand, and then to follow up on how it went.
And the whole enterprise rests on the closing promise of the passage: Jesus is with his people always, to the end of the age. The teacher who feels inadequate, the parent who feels inarticulate, the new believer who feels she has nothing to offer: the one who gave the commission did not leave the responsibility on your shoulders alone. He is present with you as you teach, present with the one being taught, and at work in both. That is the quiet confidence underneath every faithful attempt to teach others to observe all that Jesus commanded.
Biblical fidelity check
What does this passage actually establish? It establishes that the risen Jesus possesses all authority, that he commissioned his apostles to make disciples of all nations, that baptism and teaching are the two named activities accompanying that commission, that the content of the teaching is what Jesus commanded, that the goal is observance and not mere information, and that Jesus promises his presence with his people to the end of the age. What it does not establish is any particular method of teaching, any specified organizational structure, or any promise that faithful teaching will produce quick or visible results. The passage gives a mandate and a promise, not a technique or a guarantee of measurable outcomes.
A common misreading treats the phrase teaching them to observe as if it meant teaching them to know, so that the commission is considered complete once people have been exposed to correct doctrine. That reading collapses the distinction between hearing and doing that James later insists on. The word observe simply will not bear that weight; it means to keep and practice. Another misreading turns the command into a warrant for adding human rules to the curriculum, treating denominational or cultural preferences as though they carried the authority of Jesus' own commands. Both errors distort the commission. The faithful middle is to teach what Jesus taught, with the aim that disciples actually do it, relying on his presence and leaving the results to him.
Other passages that speak to Matthew 28:18-20
The theme of commandment-keeping as the mark of genuine love runs deeply through the letters of John, and the supplied passages here connect naturally with several related studies. A reader wanting to trace how light, love, and obedience interlock can begin with 1 John 2: Light, Love, and Abiding, which explores the same logic Jesus states in John 14. The theme of faith overcoming the world is taken up in 1 John 5: Faith Overcomes the World, where believing and obeying are again held together. For a wider survey, 1 John Bible Study Guide: Summary, Themes, Outline, and Gospel Connections traces these themes across the whole letter. Finally, the pastoral concern that sound doctrine produce sound living appears in 1 Timothy 1: Grace, Mercy, and Sound Doctrine, a helpful companion to the teaching mandate of the Great Commission.
Frequently asked questions
What does it mean to teach disciples to observe all things Jesus commanded?
It means teaching people not merely to know Jesus' commands but to keep and practice them. The word observe carries the sense of holding fast and doing, not glancing at. So the task includes explanation, because people cannot obey what they do not understand, but it does not stop there. Teaching aims at changed behavior, at a life increasingly shaped by what Jesus said. This is why the commission is patient, relational, and repetitive rather than a single lecture, and why James warns that hearing without doing is self-deception.
Does the Great Commission apply to every Christian or only to pastors and missionaries?
The commission was given to the apostles, and through them to the church, so the responsibility is corporate before it is individual. Pastors and missionaries carry a particular charge to teach, and James warns that teachers are judged more strictly. But every disciple belongs to a community where the word of Christ dwells richly and believers teach and admonish one another. So every Christian has some part: praying, giving, welcoming, discipling, and helping newer believers take their next step of obedience, whatever their formal role may be.
How is teaching obedience different from legalism?
Legalism treats rule-keeping as the basis of acceptance with God, so that obedience earns standing rather than flowing from it. Jesus frames obedience differently. He says that if we love him, we keep his commandments, and John adds that the one who keeps his commandments is the one who loves him. Obedience in that frame is the fruit and evidence of love, not its price. The disciple is already accepted because of Christ, and the commands are the wise shape that grateful love takes, not a ladder to climb for acceptance.
