Ramadan
Short answer: Ramadan is the ninth month of the Islamic calendar, observed with fasting from dawn to sunset, and the Bible neither commands nor forbids it as such. Scripture assumes God's people will fast, but on its own terms: Leviticus 16:29-34 establishes one required day of affliction for Israel, the Day of Atonement, and Matthew 6:16-18 assumes fasting while warning that it must not be done for human applause. Christians are not bound to Ramadan, and no verse requires it. At the same time, the Bible does not treat fasting as an evil to be avoided. Romans 14:5-6 gives the governing principle for disputed days: each person should be fully convinced in his own mind. A Christian who fasts should fast to the Lord, quietly and honestly, not to earn standing or to imitate a practice Scripture never gave the church.
What Ramadan actually is
Ramadan is the ninth month of the Islamic lunar calendar, and during it observant Muslims abstain from food, drink, and other bodily pleasures from dawn until sunset. It is one of the Five Pillars of Islam, so it functions within Islam as a required religious duty rather than an optional devotion. The month also includes extra prayer, Qur'an recitation, and charity, and it ends with the festival of Eid al-Fitr. None of this is described in the Bible, and no biblical command anticipates it. That matters for how a Christian should think about it: Ramadan belongs to a different religious system with its own scriptures and its own account of revelation.
Christians who live near Muslim neighbours will meet Ramadan every year, often through coworkers, classmates, or family members. The question is rarely whether Ramadan is mentioned in the Bible, because it is not. The real questions are whether a Christian may join in fasting alongside Muslim friends, whether doing so compromises the gospel, and how a believer should speak about it. Those questions are answered by careful attention to what Scripture says about fasting, not by fear or by careless accommodation.
It also helps to notice that the Bible is not silent about fasting in general. It records fasting in mourning, in repentance, in prayer, and in seeking God's help. So a Christian does not approach Ramadan as a practice that is foreign to all religious experience. He approaches it as a practice embedded in a system that denies the crucified and risen Christ, and he asks what faithfulness requires in that setting.
Leviticus 16 and the one fast God required
Leviticus 16 describes the Day of Atonement, the single day in Israel's calendar when the high priest entered the Most Holy Place with blood. The chapter ends with a permanent statute: Leviticus 16:29 says, “It shall be a statute to you forever: in the seventh month, on the tenth day of the month, you shall afflict your souls, and shall do no kind of work, whether native-born or a stranger who lives as a foreigner among you”. The phrase afflict your souls is the Old Testament's way of describing the self-denial connected with that day, and it is the closest thing Israel had to a commanded fast.
Several details are worth noticing. First, it was one day, not a month. Second, it was tied to atonement for sin, not to a general spiritual exercise. Third, it applied to Israel and to the foreigner living among them, which shows that God's worship had a place for outsiders who joined themselves to his people. Fourth, the day pointed beyond itself to the cleansing from sin that Israel could not accomplish by ritual alone. The fast expressed need; the blood provided the answer.
This matters for the Ramadan discussion because it shows that Scripture does regulate fasting where God commands it. But Leviticus 16 commands one day for Israel under the old covenant. It does not command a month, and it does not authorize later religious systems to add their own obligatory fasts and present them as God's requirement. Hebrews makes clear that the sacrificial system has reached its fulfilment in Christ, so the Day of Atonement's fast is not a standing obligation for the church in the way it stood for Israel.
Isaiah 58 and fasting that God rejects
Isaiah 58 records a people who fasted and complained that God did not notice. They ask in Isaiah 58:3, “‘Why have we fasted,’ they say, ‘and you don’t see? Why have we afflicted our soul, and you don’t notice?’” God's answer is blunt: while they fasted, they pursued their own pleasure and oppressed their workers. Their fast had become a day of quarrelling and violence. The outward form was intact; the heart was not. Their fasting was not accompanied by justice, mercy, or humility.
The passage goes on to describe what God actually wanted: loosing the bonds of wickedness, letting the oppressed go free, sharing bread with the hungry, and bringing the homeless into the house. Isaiah 58:6-7 expresses the point. The fast God chooses is not merely abstaining from food while continuing in cruelty. It is a life turned toward God and neighbour, and the fasting is the outward expression of that turning. When fasting is separated from repentance and mercy, it becomes a performance God refuses to reward.
This is a warning that applies to every religious tradition, including Christian ones. A person can keep every rule of an external fast and still miss God entirely. That does not make fasting wrong; it makes hypocrisy deadly. Isaiah's critique is not that fasting is pointless but that fasting without righteousness is an insult to the God who sees the heart. Anyone who fasts, in any tradition, should hear that warning and examine the motives behind it.
Matthew 6 and fasting without display
Jesus assumed his disciples would fast. In Matthew 6:16 he says, “Moreover when you fast, don’t be like the hypocrites, with sad faces. For they disfigure their faces, that they may be seen by men to be fasting. Most certainly I tell you, they have received their reward.” He does not say if you fast, as though it were optional and unusual; he says when. Fasting is part of the normal devotional life he describes alongside giving and prayer in the same chapter.
But the whole point of Matthew 6:16-18 is hiddenness. The hypocrite wants to be seen. He arranges his face, and his reward is the admiration he receives from people, which is no reward at all in God's accounting. The disciple is to anoint his head and wash his face so that no one knows he is fasting except the Father who sees in secret. The Father sees, and the Father rewards. Fasting is directed vertically, to God, not horizontally, to an audience.
Applied to Ramadan, this cuts in two directions. It forbids a Christian from fasting in order to impress Muslim neighbours or to appear spiritually serious. It also forbids a Christian from announcing his own abstention in order to look superior. Both the participant and the abstainer can be performing. The question Jesus presses is whether the fast, or the decision not to fast, is done before the Father or before an audience. If it is done for the audience, the reward is already paid out.
Romans 14 and disputed days
Romans 14 speaks directly to disagreements about days and food. Romans 14:5-6 says, “One man esteems one day as more important. Another esteems every day alike. Let each man be fully assured in his own mind.” The context is a church divided between believers with different convictions about Jewish festival days and dietary rules. Paul does not command uniformity. He commands that each person be convinced before God and that neither side despise or judge the other.
This principle has limits. It applies to matters Scripture leaves open, not to things Scripture commands or forbids. A Christian cannot use Romans 14 to justify idolatry or denial of Christ, because those are settled elsewhere. But where the Bible is silent about a particular day, the believer's conscience, informed by Scripture, is to govern. That is why faithful Christians differ about whether to honour certain days, and Paul treats that difference as something to bear patiently rather than to resolve by pressure.
Can a Christian choose to fast during Ramadan? Some believers have done so in order to identify with Muslim neighbours and to pray for them. Others have concluded that observing the Ramadan fast risks confusing the church's witness, because it could suggest that Islam and Christianity are two roads up the same mountain. Both concerns deserve a hearing. Romans 14 does not settle which conclusion is right; it settles the manner in which the disagreement should be handled, with conviction and without contempt.
What Colossians 2 says about religious regulations
Colossians 2:16-17 says, “Let no one therefore judge you in eating, or in drinking, or with respect to a feast day or a new moon or a Sabbath day,” adding that these are a shadow of the things to come, while the substance belongs to Christ. Paul is not forbidding all religious observance. He is forbidding anyone from making such observances the basis of a believer's standing. Because Christ is the substance, no one may use calendar rules to condemn a believer who belongs to him.
This protects Christian freedom from both directions. A Muslim neighbour, or a Christian with strong convictions about fasting days, cannot rightly condemn a believer who does not keep Ramadan, because no Scripture requires it. Likewise, a Christian cannot condemn another believer for choosing to fast and pray in a season that overlaps with Ramadan, provided it is done before God and not as a denial of the gospel. The shadow has given way to the substance, and the substance is Christ.
Paul's larger concern in the chapter is asceticism that looks impressive but cannot restrain the flesh. The answer to sin is not a stricter calendar but union with Christ, who is the head over every power. That does not make self-denial worthless. It makes self-denial useful only when it flows from belonging to Christ rather than from trying to secure a standing he has already secured. Any fast, in any tradition, has to be placed in that frame.
How a Christian should speak about Ramadan
Christians who live among Muslims have a genuine opportunity during Ramadan. The month draws attention to prayer, self-denial, and God, and those are themes a believer can take seriously without pretending that Islam's account of God and salvation matches the gospel. Hospitality, respectful questions, and honest conversation are better than either scorn or silence. A Christian may say plainly what he believes about Jesus, and may also listen carefully to what his neighbour believes, without treating the neighbour as an enemy.
Prayer is the most obvious and least confrontational response. A believer can pray for Muslim friends and neighbours during Ramadan, asking that the God who is not far from any of us would make himself known. He can also examine his own life for the hypocrisy Isaiah condemned and the display Jesus forbade. If Ramadan prompts a Christian to take his own prayer and self-denial more seriously, that is a good fruit even though the month itself carries no biblical authority.
Where Christians differ is whether joining the fast is wise. Scripture does not settle the question in so many words, and honesty requires saying so. What it does settle is that no one is justified by fasting, that no calendar can stand between a believer and Christ, and that any fast must be offered to the Father who sees in secret. Those truths should shape the conversation more than fear or approval of anyone else's practice.
Biblical fidelity check
Leviticus 16:29-34 establishes one required day of affliction for Israel under the old covenant, tied to the Day of Atonement, and it speaks of afflicting the soul and doing no work. It does not mention Ramadan, does not command a month of fasting, and does not impose its requirements on the church the way it imposed them on Israel. The passage is a shadow that points to Christ's atoning work, and Hebrews treats that work as finished. Reading it as a general command for all fasting in every age goes beyond what the text says.
A common misreading is to treat any ancient fast as the same as any other, as though Leviticus 16, Isaiah 58, Matthew 6, and Ramadan were simply variations of one religious instinct. That flattens real differences. Leviticus belongs to the covenant God made with Israel; Matthew 6 belongs to Jesus' teaching to his disciples; Ramadan belongs to Islam and is not found in Scripture at all. Another misreading is to conclude that because fasting is not commanded for the church, it is therefore forbidden. Scripture never says that. The faithful reading holds both: no one is bound to Ramadan, and no one is forbidden from fasting to the Lord in secret.
Other passages that speak to Leviticus 16:29-34
Several related studies help place this passage in its wider biblical setting. The rules about bodily markings in Are Tattoos a Sin? Leviticus 19:28 in Context show how to read Old Testament ceremonial and holiness laws without either ignoring or over-applying them. The teaching of Jesus in The Beatitudes Explained: Matthew 5:1–12 Meaning shows the heart posture that gives fasting its value. The supremacy of Christ over every religious system is worked out in What Does Colossians 1:23 Mean? Context, Theology, and Application. For a broader walk through the letter, see Colossians 1: Paul's Prayer and Christ's Supremacy.
Frequently asked questions
Does the Bible mention Ramadan?
No. Ramadan is not mentioned anywhere in the Bible, and it is not part of the biblical calendar. It belongs to Islam and to the Qur'an, not to the Old or New Testaments. The one fast God required of Israel was the Day of Atonement described in Leviticus 16, and the New Testament assumes fasting without commanding a fixed month for it. Christians are therefore not bound by Ramadan and cannot claim biblical warrant for treating it as a required observance. They can still treat Muslim neighbours with respect and pray for them.
Can a Christian fast during Ramadan?
Scripture neither commands nor forbids it, so believers must decide before God. Romans 14:5-6 says, “One man esteems one day as more important. Another esteems every day alike. Let each man be fully assured in his own mind.” Some Christians fast in solidarity and prayer for Muslim neighbours; others avoid it so their witness is not confused with Islam. Both positions can be held in good conscience if the fast is offered to the Father in secret rather than performed for people, as Jesus teaches in Matthew 6:16-18.
Is the Day of Atonement fast in Leviticus 16 still binding?
No, not for Christians under the new covenant. Leviticus 16:29-34 gave Israel a statute to afflict the soul once a year, tied to the atoning sacrifices the high priest offered. Hebrews teaches that those sacrifices pointed forward to Christ and have been fulfilled in him, so the ceremonial calendar is not a standing obligation on the church. The passage remains valuable because it shows God's seriousness about sin, his provision of atonement, and the humility with which his people were to approach him.
