Short answer: In Matthew 6:16–18 Jesus addresses fasting as something his hearers already do, not as a new command he imposes. His concern is the motive: fasting to be noticed and praised by people has already received its full reward. Fasting directed to the Father, hidden from public view, is seen by the One who sees in secret and rewarded by him. The passage assumes the practice while making the heart's orientation the deciding issue.
Where fasting fits in the sermon on the mount
Matthew 6:16–18 sits in the Sermon on the Mount, a sustained body of teaching rather than a story with a plot. Jesus is describing the ethics of the kingdom of heaven to a mixed crowd, disciples and others together, and the passage is instruction, not narrative. Its literary shape is a series of contrasts. Almsgiving comes first, then prayer, and now fasting as the third example. In each case Jesus sets a common religious practice beside its counterfeit and asks which audience the practitioner is actually playing to. The pattern matters: He is not introducing a new ritual but exposing a familiar one.
The placement is deliberate. Fasting follows the teaching on prayer, including the Lord's Prayer and the warning against empty repetition, and just before it stands the call to forgive. The wider sermon presses for a righteousness that exceeds that of the scribes and Pharisees, again and again contrasting outward appearance with inward reality. Fasting was an established Jewish practice, and Jesus does not command it here. He assumes His hearers do it and corrects how they do it. The verbs are telling: He pictures sad faces, disfigured faces, and then a washed face and anointed head.
Immediately after verse 18 the sermon turns to treasure, warning against laying up goods on earth and urging treasure in heaven. That turn keeps the theme steady: the question is whose reward you are seeking. The covenant setting is the inbreaking kingdom, where Jesus interprets the law with authority and calls for undivided devotion. Fasting, then, is never a lever for earning God's favor, and it must never be pressed into harm to the body. Anyone with a medical condition should seek wise counsel before undertaking it.
The passage closes with a promise about the Father who sees in secret, and the verses that follow extend the same logic to treasure. What Jesus is forming is a people whose devotion has one audience. The fasting He describes is not performed for a congregation but left largely invisible, ordinary in its outward details. That is the literary shape of the whole section: hiddenness, then reward from the Father rather than from onlookers. Reading it in context keeps us from turning a correction of show into a new performance.
Fasting without a show: what Jesus actually says
Jesus begins with a plain assumption: when you fast, not if. Fasting was already part of the religious life of his hearers, and he does not argue for or against the practice. What he targets is the performance. He points to those who act a part, pretending to be devout while quietly angling for human praise, and he describes them pulling their faces into a deliberate gloom so that others will notice. The display is the point. Their reward, Jesus says, is exactly what they were after: they wanted to be seen, and being seen is all they get.
Then comes the counter-instruction, and it is almost funny in its ordinariness. Anoint your head, and wash your face. In that world these were everyday grooming habits, not religious gestures. Jesus is telling the fasting person to look like a normal day. The fast stays between you and your Father who is in secret, not between you and an audience. This is not a rule against ever mentioning a fast to anyone, and it is not a demand to deceive. It is a direction for the heart: do not arrange your appearance so that people will read your devotion off your face.
Notice the two kinds of seeing. One is the glance of people, which passes and pays only in passing. The other is the quiet sight of the Father, who sees what is hidden and answers from that hidden place. Jesus sets the reward of each over against the other. Fasting, then, is not a lever for earning God's favor; it is a practice offered to a Father who already sees. And because the body is involved, fasting is never a test of spiritual toughness. Anyone with medical concerns should seek wise counsel before undertaking it.
The passage ends where the heart always ends, with treasure. Jesus warns against piling up goods on earth, where moth and rust consume them and thieves break in, and tells his hearers to store treasure in heaven, where none of that reaches. The contrast is not between money and spirituality but between two securities. One can be lost; the other cannot. Fasting trains a person to say no to appetite for a time, and that small refusal quietly loosens the grip of the visible on the heart. The Father who sees in secret is the treasure worth arranging your life around.
The reward the Father gives in secret
Jesus begins with a word that assumes the practice: when you fast, not if. Fasting was familiar in Jewish devotion, yet He does not command it here. He corrects how it is done. The hypocrites in view disfigure their faces so that others will notice their fasting. Their reward is settled already, Jesus says, because the approval they wanted was human. His instruction is almost comically ordinary: anoint your head and wash your face. Do the normal things. Let no one read fasting on your face. The point is not that fasting must be hidden from everyone, but that it must not be staged to be seen.
The motive Jesus names is being seen by the Father who is in secret. That phrase carries the weight of the passage. Fasting is directed toward God, not toward an audience, and the reward comes from Him rather than from public recognition. This fits the verses just before, where Jesus warns against empty repetition in prayer and teaches His disciples to ask the Father for forgiveness. It also fits the Sermon's larger argument: righteousness that exceeds outward display, where the heart stands before God. Fasting is acceptable not because it is impressive but because it is offered to Him.
Verses 19–20 turn immediately to treasure. Jesus contrasts what moths and rust destroy with what is kept in heaven, and the same logic runs through the fasting instruction: do not perform for a reward that does not last. Two cautions follow. Fasting cannot earn God's favor; it is a voluntary act of devotion, not a transaction. And it must not harm the body. Those with medical conditions should seek wise counsel before fasting. The heart's orientation is the issue, and the Father who sees in secret is the one to whom it is offered.
Where readers disagree about fasting, and what the text actually settles
Notice what Jesus assumes rather than commands. He says, “Moreover when you fast, don’t be like the hypocrites, with sad faces” (WEB) (Matthew 6:16). The word is when, not if, which is why some readers treat fasting as a normal Christian expectation. Others point out that the New Testament never lays a direct command on the church to fast, and they read this as a voluntary discipline Jesus simply guides. Both readings have weight. What the passage does not do is settle the question for us, so this is a place for conviction rather than judgment of others.
The text is equally silent on form. It names no duration, no type of fast, and no frequency. Jesus does not say how long or how often, only how not to do it. He contrasts the hypocrites, who disfigure their faces so people will notice, with the disciple who anoints the head and washes the face (Matthew 6:17). That is ordinary grooming, not a disguise. The point is not that all public fasting is wrong, since Israel fasted corporately. What is condemned is fasting performed to be seen by people. Corporate fasting can still be directed to God.
The reward language deserves care. Jesus says the Father who sees in secret “will reward you” (Matthew 6:18). That is not a promise that fasting earns forgiveness, favor, or answers to prayer. The hypocrites, he says, already have their reward in the notice they wanted. The disciple’s reward comes from the Father, unearned and unseen. So fasting is never a transaction and never a reason to injure your body; those with medical conditions should seek wise counsel first. The heart turned toward God, not toward an audience, is what this passage keeps central.
Anointed head, washed face, hidden motive
Jesus turns from forgiveness to fasting without changing the setting. In 6:16 he assumes his disciples will fast, the way 6:2 assumed they would give and 6:5 assumed they would pray; the question is not whether but how. The hypocrites he describes make their faces sad and disfigure them so that others will notice they are fasting. Their reward is already paid out in full, because the audience they wanted was people. Jesus does not forbid visible effects of fasting. He forbids arranging your face and appearance so that fasting becomes a public performance. The fast itself is real; the display is what he removes.
Then comes the counter-instruction in 6:17–18: anoint your head and wash your face. In a culture where disheveled hair and ash marked a fast, ordinary grooming was a deliberate concealment. The point is not that God is impressed by tidy hair but that the fast is directed to the Father who is in secret. Jesus twice names the Father as the one who sees in secret, and he attaches a promise: your Father will reward you. Notice where this sits in the sermon. It follows the prayer for forgiveness in 6:12 and the warning in 6:14–15, so fasting is never a lever for earning mercy. It is the practice of someone already looking to the Father.
The gospel keeps this practice from turning into either performance or self-punishment. Jesus alone lived the hidden devotion he describes; the Gospels record no fast of his except in the wilderness, but they show a life of prayer and dependence on the Father, and he warned against a hypocrisy he never had. Because his work secures the Father's reward, our secret devotion is accepted through him and not because of its intensity. So fasting is a response to grace, not a payment toward it. It must never be used to earn God's favor or to damage your health; if you have a medical condition, seek wise counsel before you fast.
How to fast without turning it into a performance
Jesus assumes His disciples will fast: He says "when you fast," not if. The contrast in Matthew 6:16–18 is not between fasting and not fasting but between fasting for an audience and fasting before the Father. The hypocrites in view made their faces look grim so others would notice their devotion. Jesus does not tell His followers to fast less intensely; He tells them to anoint the head and wash the face, ordinary grooming that hides the practice rather than advertising it. The question to ask before a fast is simple and searching: am I seeking God's face, or am I seeking to be seen?
That question reaches further than public display. Fasting can become a private performance too, a way of proving to ourselves that we are serious, or a lever we pull to obligate God to act. Both turn a gift into a transaction. The gospel frees us from that burden: our acceptance before the Father rests on Christ's righteousness, not on skipped meals. So we can fast with humility and freedom, not to earn favor and not to impress anyone, including ourselves. Fasting is also not a tool for harming the body; those with medical conditions should seek wise counsel before undertaking one.
Jesus ends with a quiet promise: the Father who sees in secret will reward. Notice where the attention goes. Not to the fast itself, not to its length or intensity, but to the Father who sees what no one else does. The hypocrites, Jesus says, have received their reward already in the notice they wanted. The disciple who keeps the fast hidden receives something better from the one who sees in secret. That reward is enough. Faithful response, then, looks ordinary: examine the motive, groom and act normally, keep the fast between you and God, and trust the Father's hidden sight.
Biblical fidelity check
In reading Matthew 6:16–18, the main risk is turning a contrast into a rulebook. Jesus is not legislating a fasting technique; he is contrasting two audiences, people and the Father. Note the assumption in when you fast, which treats the practice as familiar, and note what the text never supplies: no duration, no frequency, no menu. The hypocrites are those acting a part, and disfigure their faces names a deliberate show of gloom. Grooming normally, by contrast, keeps the fast between you and the Father who sees in secret. The reward language belongs to what God gives, not to human applause.
Evangelical readers genuinely disagree about whether fasting binds Christians today or remains a voluntary discipline. Some hear a normal expectation in when you fast; others observe that the New Testament never explicitly commands the church to fast. Form, frequency, and whether fasting may be corporate are also disputed. The text itself does not settle these, and it does not condemn all public fasting, only fasting done to be seen. What stays central is motive: fasting directed to God rather than to an audience. Nothing here earns a reward; the Father who sees in secret gives it.
Studies that take up Matthew 6:16-18 from another angle
Fasting, secret prayer, and treasure in the Sermon on the Mount are treated elsewhere. For further study, see Fasting in Matthew 6:16-18: Secret, Not Showy, Matthew 6:16-18 Fasting: Secret Devotion to God, Matthew 6:16-18: Fasting and the Secret Reward, and Prayer and Fasting: What Matthew 6:5-18 Really Teaches.
Frequently asked questions
Does Matthew 6:16–18 command Christians to fast?
No, the passage does not issue a command to fast; it assumes fasting as an existing practice and then corrects how it is done. Jesus begins with "when you fast," treating it like prayer and giving, which he handles the same way in the surrounding verses. That wording places fasting among normal acts of devotion rather than among requirements imposed on everyone. The passage regulates motive, not frequency or obligation. Whether and how often a believer fasts remains a matter of voluntary devotion before God.
How can I fast without drawing attention to myself?
Jesus answers this with a concrete image: anoint your head and wash your face so that you are not seen by men to be fasting. In that culture, disfigured faces and visible neglect were the signals of a public fast, and Jesus tells his disciples to do the opposite. The practical shape of this today is to keep fasting between you and the Father rather than turning it into a signal others are meant to read. It does not require secrecy about every detail of your life, but it does mean refusing to use fasting as a way to advertise your devotion.
What is the reward Jesus promises for secret fasting?
Jesus says the Father who sees in secret will reward you, without specifying what the reward is. The contrast in the passage is with those who fast to be seen by men and, in Jesus' words, have received their reward already. The reward of hidden fasting is therefore something the Father gives, not the human approval that public fasting can purchase. The text does not promise health, wealth, or any measurable outcome, and it should not be treated as a transaction that earns God's favor. The reward is left in the Father's hands, which is precisely where the passage places it.
