Matthew 6:16-18: Fasting and the Secret Reward
Short answer: In Matthew 6:16-18 Jesus assumes his disciples will fast, but he forbids fasting as a performance. The hypocrites disfigure their faces so that people will notice. Their reward is the notice itself, already paid in full. Jesus tells his followers to anoint the head and wash the face, so the fast is invisible to others and visible only to the Father who sees in secret. He promises that the Father will reward openly. The passage is not a rule about looking cheerful at all costs; it is a command to stop using spiritual practice as a way of managing other people's opinion. The location of the reward is the point: applause now, or the Father's open reward later.
Fasting is assumed, not commanded
Notice first what Jesus does not do in Matthew 6:16-18. He does not argue that fasting should be abolished or that it belonged only to an older dispensation. The sentence begins with a word we commonly render as when: when you fast. That phrasing assumes the practice will continue among his people. He gives the same structure to giving and to prayer in the surrounding verses, so fasting sits alongside them as a normal part of devoted life toward God. The issue is never whether the act exists, but whom it serves.
This matters because some readers of the Sermon on the Mount conclude that Jesus is spiritualising away all outward religion. He is not. He is dealing with the heart behind outward religion. Fasting is treated as something a disciple may genuinely do. The warning concerns the motive and the audience, not the legitimacy of the discipline. If Jesus had wanted to end fasting, this would have been the place to say so. Instead he assumes it and then instructs his disciples how to conduct it so that it remains a matter between them and God.
The Old Testament background reinforces this assumption. Fasting appears in Israel's life from the law onward, especially in connection with the Day of Atonement, and it appears often in the prophets and the historical books. Isaiah 58:3-9 records a people who fasted and complained that God took no notice. Zechariah 7:5-6 records God asking whether seventy years of fasting had actually been done for him. In both cases the practice is real; the question is whether it reached God or merely circulated among people.
So the disciples of Jesus are never told to invent a new, purely inward spirituality that has no bodily expression. They are told to keep the body's discipline honest. Fasting is a bodily act with a spiritual aim. That combination is exactly why it can so easily be turned into theatre. Because the body is visible, the fast is visible; and because the fast is visible, it can be managed for an audience. Jesus goes straight to that danger.
The hypocrites and their disfigured faces
Jesus describes the hypocrites as wearing sad faces and disfiguring their faces so that people will see they are fasting. The Greek behind the word indicates making the face unrecognisable, perhaps by smearing it, neglecting it, or pulling it into an unmistakable expression of suffering. The point is not subtle. It is a deliberate public signal: look at me, I am denying myself. The fast has become a costume. Jesus does not say the fasting was fake; he says the display was calculated. The religious activity was real, but it was aimed at the wrong audience.
His verdict is severe and final: they have received their reward. The language of payment is important. A reward that has already been collected cannot be collected again. If the fast was performed to be seen, then being seen was the wage, and it has been paid in full. There is nothing left over. This is not a threat of punishment added on top of a genuine devotion; it is the natural exhaustion of a devotion that never reached beyond human eyes. The admiration of onlookers was the entire transaction, and the transaction is closed.
We should be careful not to turn this into a hunt for hypocrites in other people. Jesus is speaking to his disciples, and the warning is aimed at anyone who can recognise the temptation. Every believer who has ever served in a visible way knows the pull. The pull is not always obvious vanity; sometimes it is a quieter desire to be thought serious, mature, or spiritually hungry. The disfigured face can be literal, but it can also be a tone of voice, a carefully dropped detail, or a reluctance to eat in front of others. The heart is inventive.
Jesus does not ask his disciples to become experts at detecting this in others. He asks them to deal with it in themselves. The antidote he gives is not self-hatred or the abandonment of discipline; it is a change of audience. The fast is to be directed to the Father, who sees what is hidden. When the audience changes, the performance loses its point. A person who is genuinely seeking God does not need the fast to be noticed, because the one whose notice is sought already sees everything.
Anoint your head and wash your face
The instruction that follows is concrete and a little surprising. Jesus says to anoint the head and wash the face. In that culture, anointing the head with oil and washing were ordinary marks of grooming and, in some settings, of joy and celebration. Fasting was often accompanied by neglecting such things as a sign of mourning. Jesus reverses the custom. Instead of making the fast visible through neglect, the disciple is to look normal. The outward appearance is deliberately unremarkable so that the fast remains hidden.
This is not a command to deceive. It is a command to stop advertising. There is a difference between privacy and deceit. A disciple who grooms normally is not lying about fasting; they are simply refusing to make the fast a public announcement. Jesus is not forbidding all knowledge of our disciplines. He is forbidding the use of them as a message to others. If a spouse or a close friend knows, that may be unavoidable and even wise. The issue is whether the fast is being used as a signal to secure a reputation.
It is worth noticing how practical this is. Much of our spiritual instability comes from living for an audience we can see. We want to know that our sacrifices matter, and other people are the most immediate way to know it. Jesus reroutes that longing. He does not tell us to stop wanting to be seen; he tells us who actually sees. The Father sees in secret. The phrase is one of the most comforting in the Sermon on the Mount, and it is also one of the most searching, because it means nothing is wasted and nothing is hidden.
Some faithful Christians have read this instruction differently, taking it as a general principle rather than a literal grooming rule, and there is room for difference here. The essential point is not the oil but the secrecy. The disciple is to fast in a way that does not broadcast the fast. Whether one applies that by eating normally in public, by avoiding announcements, or by simply keeping the matter between oneself and God, the aim is the same: a fast that is not for sale to an audience.
The Father who sees in secret
The promise attached to the instruction is that the Father, who sees in secret, will reward openly. The phrase carries the whole weight of the passage. It tells us first that God sees. Nothing about the hidden fast is lost. A disciple may fast for a day and no one on earth may ever know; the Father knows. It tells us second that God rewards. Fasting is not a technique for manipulating God, but it is a practice God is pleased to honour. The reward is not specified here, and that is deliberate. Jesus leaves it open because the reward is finally the Father himself, not a commodity.
The contrast with the hypocrites could not be sharper. Their reward is paid immediately and consists of human recognition. The disciple's reward is delayed and comes from the Father. This is a recurring pattern in Scripture. Jesus elsewhere tells his followers to store up treasure in heaven rather than on earth. The open reward may include things we can see in this life, and it certainly includes what God gives in the age to come. Either way, the disciple is not left unrewarded; the disciple is simply not paid by the crowd.
This also guards us against a subtle reversal. We can become proud of our secrecy. We can begin to congratulate ourselves on how quietly we fast, which is simply the same performance with a different audience. The point of the passage is not that hidden fasting makes us superior. It is that the Father is the one we are seeking. A disciple who is genuinely interested in God will not be preoccupied with whether anyone noticed, including himself. The secrecy is a means, not a badge.
Pastorally, this promise is a great relief for those whose service is unseen. Many believers care for children, pray through long nights, and deny themselves in ways no congregation will ever applaud. Jesus says the Father sees. That is not a consolation prize; it is the highest audience there is. The one whose approval actually matters is never absent from the hidden place. The fast that no one notices is not a wasted fast. It is the kind Jesus describes as rewarded openly by the Father.
What the prophets said about fasting
Jesus is not the first to confront fasting that misses God. Isaiah 58:3-9 pictures a people who fast and then complain, asking why God has not seen and why he has not noticed. God's answer is that on the day of their fast they pursue their own pleasure and oppress their workers. The fast is real, but it is disconnected from justice and mercy. It has become a religious performance that leaves the rest of life untouched. The problem is not that they fasted too little; it is that they fasted while ignoring the weightier matters.
Zechariah 7:5-6 presses the same question. God asks whether the people who fasted and mourned for seventy years had actually been fasting to him. The implied answer is no. Their fasting had become a custom, a communal rhythm, perhaps even a way of managing their own grief and identity, but it had lost its direction. It was aimed at themselves and their community rather than at God. The prophets therefore prepare us for Jesus' teaching. The danger of fasting without God is old and persistent.
This is why biblical fasting is so often joined to repentance and to seeking God's face. In 2 Corinthians 7:10-11, Paul distinguishes godly sorrow, which produces repentance, from the sorrow of the world, which produces death. Fasting is one way that sorrow for sin is expressed in the body. When it is genuine, it turns the whole person toward God. When it is merely social or theatrical, it can produce the outward form of repentance while leaving the heart unchanged. The prophets and the apostle agree on the stakes.
None of this means that fasting is suspicious or that it should be avoided. It means that fasting, like prayer and giving, is only as good as its aim. Isaiah and Zechariah do not tell Israel to stop fasting; they tell Israel to fast toward God and to let that fasting reshape how they treat people. Jesus stands in that same prophetic stream. He is not introducing a new suspicion of bodily discipline. He is calling his disciples back to the one audience that makes any discipline worth anything.
Fasting in the practice of the early church
The book of Acts shows fasting woven into the ordinary life of the first believers. In Acts 13:2-3, while they were serving the Lord and fasting, the Holy Spirit spoke and set apart Barnabas and Saul for the work to which he had called them. Fasting here accompanies worship, prayer, and decision-making. It is not a spectacle and it is not a technique for forcing a result. It is part of a community waiting on God. The Spirit speaks, and the church responds with prayer and fasting and sending.
What is striking is how unremarkable the practice is in Acts. There is no instruction about how to look, no concern about who noticed, no discussion of reward. The early church simply fasted as part of seeking God. That is the atmosphere Matthew 6:16-18 is trying to protect. When fasting is normal and Godward, the question of display hardly arises. The problem comes when fasting becomes a public marker of spiritual status, which is exactly what Jesus confronts in the Sermon on the Mount.
This suggests a healthy pattern for churches and individuals. Fasting can be called for corporately, as in Acts, without becoming a performance. A congregation may set aside a day to seek God together, and that is not hypocrisy just because it is known. The danger is not that others know we are fasting; the danger is that we fast so that others will know. The same practice can be either an offering to God or a currency spent on reputation. The heart decides which.
For the individual disciple, Acts also reminds us that fasting is not limited to crisis moments. It belongs to the regular seeking of God's direction and the regular humbling of the soul before him. Jesus' teaching assumes that his followers will fast, and the early church confirms it. The question is never whether the practice has a place. The question is whether the practice has the right audience. Matthew 6:16-18 gives us that audience by name: the Father, who sees in secret.
Fasting that is not for show
The practical shape of Jesus' teaching is a fast that is not for show. This does not require secrecy about every detail of our lives, and it does not require pretending that we never struggle. It requires that the fast not be used as a message. The disciple is free to fast and free to be unimpressive while doing it. The freedom is the point. A person who no longer needs to be admired for their discipline can actually give themselves to God without the constant calculation of how it looks.
This freedom also changes how we handle failure. If our fasting is for an audience, a failed fast is a public embarrassment, and we are tempted to hide it or spin it. If our fasting is for the Father, a failed fast can be brought to the Father honestly. We can confess weakness and begin again. The secrecy Jesus commands is not a demand for flawless performance; it is a release from performance altogether. The Father who sees in secret is also the Father who receives the weak and the inconsistent.
It is worth asking what we are actually hungry for. Fasting exposes our appetites, and that is part of its value. But it also exposes our hunger for approval. When we deny ourselves food and no one notices, we find out how much we wanted to be noticed. Jesus does not condemn the discovery. He redirects it. The hunger for recognition is real, and it can only be satisfied by the God who sees. In that sense, fasting is a school in which we learn to live before the one who is always watching in love.
So the application is simple, even if it is not easy. When you fast, do not announce it, do not arrange your face to advertise it, and do not measure its worth by who noticed. Do it toward the Father. Trust that he sees, and trust that he rewards. The reward may not arrive on the schedule we would choose, and it certainly will not arrive as applause from people. But Jesus says the Father will reward openly, and his word is enough for the hidden place.
Biblical fidelity check
Matthew 6:16-18 establishes that fasting is a legitimate practice for disciples and that it must be directed to God rather than to human observers. It does not establish a command that every Christian must fast at prescribed times, nor does it specify how long or how often a fast should last. It also does not promise that every fast will produce a visible, immediate blessing in this life. The reward is promised by the Father and left in his hands. What the passage does say plainly is that hypocrisy in fasting is possible, that it forfeits the Father's reward, and that the remedy is a Godward secrecy rather than abandonment of the practice.
A common misreading treats the passage as a prohibition on all public religious activity, as if any knowledge of our fasting were hypocrisy. That is not what Jesus says. He himself fasted, and the early church fasted together in Acts 13:2-3. The problem is not that others know; the problem is that we fast in order to be seen by them. Another misreading turns the secret reward into a general promise of earthly prosperity. Jesus promises the Father's reward, not a formula for getting what we want. The passage calls us to trust the Father's judgement about what and when to give, and to be content that he sees.
Other passages that speak to Matthew 6:16-18
The themes of fasting, humility, and reward run through the wider biblical witness. Isaiah 58:3-9 confronts fasting that ignores justice, and Zechariah 7:5-6 asks whether fasting was ever really directed to God. In Luke 18:9-14 Jesus tells a parable about two men praying, one of whom trusted in his own righteousness, which speaks directly to the self-display Jesus warns against in the Sermon on the Mount. Acts 13:2-3 shows the early church fasting while seeking the Lord, and 2 Corinthians 7:10-11 connects sorrow to genuine repentance. For further study in this series, see What Does 1 Corinthians 1:10 Mean? Context, Theology, and Application, What Does 1 Corinthians 1:9 Mean? Context, Theology, and Application, 1 Corinthians 1: Called, United, and Boasting in the Lord, and 1 Corinthians 10: Warnings and Freedom.
Frequently asked questions
Does Jesus command Christians to fast in Matthew 6:16-18?
Jesus does not issue a direct command to fast in this passage, but he assumes that his disciples will. He says when you fast, not if you fast, and then instructs them how to do it without seeking attention. The early church continued the practice, as Acts 13:2-3 shows. So fasting is not imposed on every believer at fixed times, but it is a normal and expected part of seeking God. What Jesus forbids is fasting as a performance for other people.
What does it mean that the Father will reward you openly?
It means the Father sees what is hidden and will not leave it unpaid. The hypocrites receive their reward immediately in the form of human notice, and that exhausts it. The disciple who fasts before God receives something better from the Father's hand. The text does not specify what the reward is, which keeps us from turning it into a formula. It may include blessings in this life, and it certainly looks toward what God gives in the age to come. The point is that nothing done for God is wasted.
Is it wrong to tell anyone that I am fasting?
Not necessarily. The issue Jesus addresses is motive: fasting in order to be seen and admired by people. There are situations where a spouse, a doctor, or a close friend should know for practical reasons. The early church even fasted together publicly in Acts 13:2-3. What is forbidden is using the fast as a message to secure a reputation. If the fast is for the Father, the question of who happens to know becomes far less important than whom it is for.
