Fasting and abstinence are ancient, transformative practices at the core of Catholic spiritual life. They express penance, purify the heart, and open us to God and neighbor. Scripture presents fasting as more than a ritual: it is a way to turn away from sin, seek God’s mercy, and align our desires with the will of the Father. In the New Covenant, Jesus invites his followers to fast in a way that is sincere, not theatrical, a journey that accompanies prayer, almsgiving, and trust in God’s providence. The New American Bible Revised Edition (NABRE) helps us hear these themes clearly in the light of Christ, from the prophets who call to repentance to Jesus’ teaching in the Gospel and the early church’s practice. This article surveys what the Bible says about fasting and abstinence, shows how the Catechism explains these disciplines, and offers practical steps for growing in holiness today.
In biblical witness, fasting is often tied to repentance and humility before God. The Old Testament presents fasting as a signal of penitence and longing for God, while the Gospel shows Jesus reframing fasting as an interior conversion—what comes from a sincere heart, not mere outward display. The NABRE passages below illuminate how fasting and abstinence function within prayer, conversion, and solidarity with the poor. The Church’s teaching joins these texts to form a coherent tradition: fasting and abstinence are penitential practices intended to sanctify the whole person and compel charity toward others. The result is a more authentic, hopeful discipleship that reflects Christ’s own self-denial for our salvation.
Moreover, fasting and abstinence are not isolated acts but part of the Church’s fuller economy of penance. The Catechism teaches that these disciplines shape temperance, detach us from disordered loves, and prepare us to receive God’s grace with greater freedom. When observed with faith, they become a school of prayer and a source of mercy that shapes how we treat others, especially the vulnerable. In this light, the biblical and catechetical witness invites Catholics to integrate fasting and abstinence into their regular life, especially during Lent and on designated days, so that fasting becomes a living sign of conversion and solidarity.
What Does the Bible Say About Fasting and Abstinence?
The Bible treats fasting as a serious spiritual practice that can accompany repentance, worship, and petition. In the Old Testament, fasting is often connected with turning back to God and seeking divine mercy. In the New Testament, Jesus teaches about fasting in a way that stresses sincerity and interior conversion, while the early Church models fasting as part of prayerful discernment and mission. Across these strands, fasting is most faithful when it is joined to prayer, humility, and acts of mercy—so that the restraint of the body becomes a vehicle for grace in the soul and in the world.
In practical terms, the biblical witness invites believers to resist the temptation to perform fasting for show, and rather to offer it as a true offering to the Lord. The NABRE texts shown below offer a spectrum of biblical voices on fasting and abstinence, from prophetic exhortations to Jesus’ instruction, to apostolic practice, and to the lived experience of prayerful communities. Taken together, they point to a cohesive vision: fasting is a penitential discipline that forms charity, fosters humility, and orients us toward God and neighbor.
The Most Important Bible Verses About Fasting and Abstinence
Matthew 6:16-18
And whenever you fast, do not look gloomy about it, as the hypocrites do, for they disfigure their faces so as to show others they are fasting. Amen, I say to you, they have received their reward. But when you fast, anoint your head and wash your face, so that you may not appear to others to be fasting, except your Father who is hidden, and your Father who sees what is hidden will repay you.
In this teaching, Jesus calls for sincerity in fasting. He warns against making fasting a spectacle to gain human praise. The passage invites believers to fast in a way that emphasizes interior conversion and fidelity to God rather than outward reputation, echoing the call to humility and authentic prayer that runs through the Gospel.
Isaiah 58:6-7
Is this not the fast that I choose: to loose the bonds of wickedness, to undo the heavy chains, to let the oppressed go free, and to break every yoke? Is it not to share your bread with the hungry, and to bring the poor and homeless to your house; when you see them naked, to cover them and not to hide yourself from your own kin?
This passage reframes fasting as acts of justice and compassion. True fasting, in Isaiah, is not merely abstaining from food but liberating others, feeding the hungry, and clothing the needy. It anchors penance in concrete love, aligning with the prophetic call to justice that undergirds the spiritual life.
Joel 2:12-13
Even now, says the LORD, return to me with your whole heart, with fasting, with weeping, and with mourning; rend your hearts and not your garments.
The call is for a heartfelt return to God. Fasting is a sign of penitence, but the emphasis is on interior renewal—heart, not simply ritual. The invitation to rend the heart aligns fasting with repentance and reliance on divine mercy, a theme that will surface again in the New Covenant.
Esther 4:16
Go, assemble all the Jews who lives in Susa, and fast for me; do not eat or drink for three days, night or day. I and my attendants will also fast as you do. Then I will go to the king, though it is against the law, and if I perish, I perish.
Esther’s fast is a communal act of intercession in a moment of peril. It shows fasting as a source of courage and solidarity in choosing suffering with the people for the sake of a just outcome. The text also illustrates how fasting can accompany prayerful discernment in the midst of difficult decisions.
Please test your servants for ten days, and let them give us vegetables to eat and water to drink. Then compare our appearance with that of the young men who eat the royal food, and treat your servants according to what you see. So he consented to them in this matter and tested them for ten days. At the end of ten days they looked healthier and better nourished than all the young men who had been eating the royal food.
Daniel’s fast demonstrates a disciplined, prayerful abstinence that preserves integrity in the face of pressure to conform. It highlights how a virtuous, simple diet can become a concrete form of fidelity to God and a witness to trust in divine providence. The story also invites reflection on how our modern choices can align with integrity before God.
Luke 18:12
I fast twice a week; I pay tithes of all that I own.
The Pharisee’s boast shows the danger of pride in religious practice. Luke’s Gospel, however, places fasting within the broader context of humility before God and justice toward others. Even as fasting is valuable, the text invites us to examine motives and to seek conversion that leads to charity and truthfulness before God.
Matthew 4:2
And after fasting forty days and forty nights, he was hungry.
This verse presents Jesus’ own fasting before beginning his public ministry. The fast prepares him for mission, modeling disciplined self-control and dependence on the Father. It underscores that fasting can accompany vocation and discernment as part of the Church’s life of faith.
Acts 13:2-3
While they were worshiping the Lord and fasting, the Holy Spirit said, “Set apart for me Barnabas and Saul for the work to which I have called them.”
In the early Church, fasting accompanies discernment and prayer as the Spirit guides mission. The text shows the Holy Spirit fostering community discernment through shared fasting and worship, highlighting fasting as a communal, Spirit-led practice that supports vocation and mission.
1 Corinthians 7:5
Do not deprive one another except perhaps by consent for a time, so that you may devote yourselves to prayer; then come together again so that Satan will not tempt you because of your lack of self-control.
St. Paul links fasting/abstinence to a period of prayerful focus, followed by renewed mutuality in marriage. The passage frames abstinence as a temporary, purposeful discipline for prayer and intimacy with God, always ordered toward love for the other and the building up of virtue.
The Catechism of the Catholic Church Says
The Catechism presents fasting and abstinence as penitential disciplines that express and foster conversion. These practices are not merely rules but grace-filled means to detach from unhealthy attachments, to grow in temperance, and to unite prayer with acts of charity. They are to be observed with seriousness, but also with humility and joy, within the life of the Church and the liturgical year. See CCC 2043-2049 for the teaching on fasting and abstinence, including their purpose, proper spirit, and relation to prayer and almsgiving.
In particular, the Catechism explains that fasting and abstinence are not arbitrary rites but ecclesial practices that prepare the faithful for the celebration of the Paschal Mystery. They are rooted in Scripture and enriched by the Tradition of the Church, calling believers to a deeper conversion, solidarity with the poor, and a more attentive prayer life. The CCC situates these disciplines within the broader call to personal holiness and communal reform, inviting a balanced, reasoned, and merciful practice (CCC 2043-2049).
For Prayer and Meditation — Lectio Divina
Reading: Read the key verse for today, Luke 18:12 (or any of the chosen verses). Then
“I fast twice a week; I pay tithes of all that I own.”
Meditation: Question to ponder: What are my motives when I practice fasting—am I seeking God or human praise, and how can I grow in humility this week?
Prayer: A short prayer: “Lord Jesus, grant me a sincere heart in fasting, a spirit of humility, and a readiness to share the burden of the hungry and the poor. Help me to fast that I may love more, not boast more.”
Contemplation: Sit in God’s presence for a few minutes, resting in the love that transforms penance into mercy. Allow the Spirit to guide your next act of charity and prayer.
Frequently Asked Questions
Why do Catholics fast and abstain? Fasting and abstinence are penitential practices that form the will, discipline desires, and unite us with Christ’s suffering. They are expressions of repentance and love for God and neighbor, not merely rules to follow.
What are the current fasting and abstinence rules? Traditionally, Catholics aged 14 and older abstain from meat on Fridays in Lent, and fast on Ash Wednesday and Good Friday. Rules can vary by region, so consult your diocese for local norms and exemptions.
Are there exemptions for health or age? Yes. If fasting or abstinence would endanger health or if a person is ill, pregnant, or otherwise unable, the faithful are exempted and should follow prudent care and guidance from a pastor or physician.
How can I practice these in daily life? Integrate fasting with regular prayer, Scripture, and acts of charity. Consider reducing meals, giving to the poor, or simplifying consumption on appropriate days, and examine motives to ensure love and humility.
What is the difference between fasting and abstinence? Fasting typically refers to reducing the quantity of food, while abstinence refers to refraining from certain foods (notably meat). Both are penitent practices that accompany prayer and charity, but they target different aspects of self-control and devotion.
May the Lord enrich your prayer through fasting and abstinence, drawing you closer to Christ and more deeply into the life of the Church.
