Break Every Chain: Why Should Christians Fast?

What Fasting Actually Is

At its simplest, biblical fasting means going without food — or sometimes without a specific comfort or activity — for a set period of time in order to focus on prayer, Scripture, and God’s presence.

The most common form is abstaining from meals for a day or part of a day while spending that time in prayer. But Christians have also fasted from specific foods (Daniel 10:3), from media, or from other habits that crowd out their awareness of God.

What makes it a fast rather than just a diet is the intentional spiritual purpose behind it. You are not skipping lunch to lose weight. You are skipping lunch to spend that hour on your knees, or in your Bible, or simply sitting quietly with God.

Jesus Expected His Followers to Fast

One of the clearest answers to why Christians fast is simply this: Jesus assumed they would. In Matthew 6:16, He did not say if you fast — He said when you fast. That single word carries a quiet expectation.

He also gave instructions on how to fast without making it a public spectacle (Matthew 6:17-18). He wanted His followers to fast in a way that was honest and private — between them and God, not performed for an audience.

The early church fasted regularly (Acts 13:2-3, Acts 14:23). The disciples fasted before making major decisions and commissioning leaders. Fasting was woven into the rhythm of their communal life, not reserved for spiritual emergencies.

Fasting as an Act of Dependence, Not Earning

Here is something easy to get wrong: fasting is not a way to twist God’s arm. You are not accumulating spiritual credits that obligate Him to answer your prayer a certain way. God is not a vending machine that rewards the right combination of disciplines.

What fasting does is change you. It puts your body in a posture that matches what your spirit is trying to say — ‘I am hungry for You, God, more than I am hungry for anything else.’

When you fast, you practice depending on God rather than your own comforts and routines. Every time your stomach growls and you turn that hunger into a prayer, you are training your soul to reach toward God first.

This is why fasting pairs so naturally with prayer. The physical act of going without food creates space — real, felt space — that you can fill with something eternal.

What Isaiah 58 Teaches About the Fast God Actually Wants

The prophet Isaiah delivered a striking word to people who were fasting dutifully but missing the point entirely. They were going through the motions while ignoring injustice around them, and God called it out directly.

Isaiah 58:6 cuts to the heart of what genuine fasting looks like: “Isn’t this the fast that I have chosen: to release the bonds of wickedness, to undo the straps of the yoke, to let the oppressed go free, and that you break every yoke?”

God was telling His people that authentic fasting is inseparable from authentic love — for Him and for the people around you. A fast that makes you more aware of your own spiritual hunger should also make you more aware of others’ literal hunger (Isaiah 58:7).

This passage is not an argument against fasting. It is an argument for fasting that actually transforms you — fasting that opens your eyes to the world God loves, not just fasting that fills a religious calendar.

Practical Reasons to Fast Right Now

You may be facing a decision you cannot figure out on your own. Fasting slows you down and creates conditions where you can hear more clearly. It does not guarantee a specific answer, but it positions you to receive wisdom (James 1:5).

You may be carrying a burden — for a sick friend, a prodigal child, a situation that feels impossible. Fasting is a way of expressing to God that you are serious. It is earnest prayer given a body.

You may simply feel distant from God, like your faith has gone thin and routine. A fast can interrupt that drift. Hunger has a way of cutting through spiritual fog.

You may want to repent of something — to truly turn away, not just feel sorry. Fasting accompanied repentance throughout Scripture (Jonah 3:5, Joel 2:12), not because it earns forgiveness, but because it is a physical expression of a heart that is genuinely turning.

Whatever your reason, the goal is the same: more of God, less of yourself running on autopilot.

How to Start If You Have Never Fasted Before

Start small. A single skipped meal with intentional prayer is a real fast. You do not have to go forty days on your first attempt.

Before you begin, tell God why you are fasting. Be honest. You do not need polished language. Something as simple as ‘God, I want to hear You more than I want lunch’ is a perfectly good beginning.

Drink water. Rest if you need to. If you have a medical condition that makes fasting from food genuinely dangerous — diabetes, an eating disorder history, certain medications — talk to a doctor first, and consider fasting from something else: social media, television, a comfortable habit. The point is the posture, not a specific food rule.

Plan what you will do with the time you would normally spend eating. Read a psalm. Sit quietly. Write a prayer. That intentional filling of the space is what transforms a skipped meal into a fast.

When you break your fast, do so gratefully and gently. The meal that ends a fast is itself a kind of communion — a reminder that every good thing, including food, comes from God (James 1:17).

What Fasting Is Not a Cure For

Fasting will not fix depression by itself. It will not heal a broken relationship through willpower. It will not make God explain suffering on your timeline. Please hear that gently but clearly.

If you are struggling with anxiety, grief, or a mental health crisis, prayer and fasting belong in your life alongside professional care — not instead of it. God works through therapists and counselors just as He works through prayer.

Fasting also will not make you spiritually superior. Jesus warned against fasting as a performance for others (Matthew 6:16). The moment fasting becomes a badge of devotion you wear for other people, it has drifted from its purpose.

Approach fasting with open hands — offering what you have, trusting God with the outcome, and staying humble about what He may or may not do in response.

Frequently Asked Questions

How long should a Christian fast?

There is no required length. Beginners often start with a single skipped meal or a sunrise-to-sunset fast. Scripture shows fasts ranging from one day to forty days, but duration matters far less than sincerity and intentionality. Start with what is honest and sustainable for you.

Can I fast from something other than food?

Yes. While food fasting is the primary biblical model, many Christians fast from social media, news, entertainment, or other habits that consume significant time and attention. The principle is the same: you are creating intentional space to seek God in place of something that normally fills that space.

Does fasting guarantee that God will answer my prayer?

No, and it is important to hold this honestly. Fasting is an act of dependence and attention, not a formula for controlling outcomes. God hears every sincere prayer whether or not it is accompanied by fasting. Fasting prepares your heart to receive whatever God’s answer is — including answers you did not expect.

Is fasting safe if I have a health condition?

If you have diabetes, a history of eating disorders, or a condition affected by skipping meals, please consult your doctor before fasting from food. God is not honored by physical harm. Consider fasting from media, entertainment, or another habit instead — the spiritual posture is what matters most.

What should I do during a fast if I am not sure how to pray?

Start with honesty. Tell God exactly where you are, even if that sounds like ‘I do not know what to say.’ Read a psalm aloud — the Psalms are full of raw, honest language that can give your prayer a starting point. Sitting quietly with an open Bible and a willing heart is itself a form of prayer.