What Does the Bible Say About Fasting?
Frequently Asked Questions
What is fasting?
How should one fast, and for how long?
- Does the Bible say to fast?
- Are there
different kinds of fasting?
- What foods can I eat while fasting?
What is Fasting?
Fasting means self-denial by going without food for a period of time. Fasting
may be total or partial -- avoiding certain foods or eating smaller than normal
quantities. The origin of fasting as a religious practice is unclear, but both
the Old and New Testaments of the Bible mention a number of instances of fasting
for various reasons.
Reasons for Fasting
Distress and Grief
Loss of appetite is a natural reaction in times of distress,
grief and mourning, and fasting was considered appropriate at these times. David
fasted as a sign of grief when Abner was murdered (2 Samuel 3:35). There was a seven-day
fast at the death of Saul (1 Samuel 31:13).
As the apostle Paul was being transported to Rome as a prisoner the ship was
caught in a violent storm. Fearing death, those aboard did not eat for many days
(Acts 27:18-20, 33-34).
Fasting is a self-sacrifice that makes one humble and
more accepting of God's will. Moses fasted for forty days in preparation for receiving
the Ten Commandments (Exodus 34:28). Daniel fasted for three weeks before receiving
his vision (Daniel 10:2-6). Elijah fasted forty days before speaking with God (1 Kings
19:8). Jesus fasted for forty days in preparation for His temptation by the
devil (Matthew 4:1-11, Luke 4:1-13).
In both the Old and New Testaments, fasting is seen as useful for humbling oneself
as a sign of commitment or repentance and for increasing faith, especially when
accompanied by prayer. Fasting allowed one to be devoted to spiritual matters without
distraction from earthly things. However, fasting was not to be considered an end
in itself, nor a substitute for obedience to God and doing good deeds (Isaiah 58:3-10).
Repentance and Atonement
When Jonah predicted the downfall of Nineveh, The Ninevites
fasted as a sign of repentance in hopes God would spare their city (Jonah 3:3-9).
The Day of Atonement was an annual obligatory day of rest and fasting for the Israelites
(Numbers 29:7). When the Israelites had sinned, they often humbled themselves and
fasted in hopes of regaining God's favor (Judges 20:26, 1 Samuel 7:6).
Jesus' Teachings on Fasting
Jesus said that fasting, like prayer, should be done in private and not for show
(Matthew 6:16-18, cf., Matthew 6:5-7). John the Baptist's disciples routinely fasted
according to Jewish custom, but Jesus' disciples did not. However, Jesus
said His disciples would mourn and fast after He had left them (Matthew 9:14-15;
Mark 2:18-20; Luke 5:33-35). The early Christians practiced fasting at least occasionally
(Acts 13:3, 14:23, 2 Corinthians 6:5, 11:27).
Some Bible versions
mention fasting in Matthew 17:21, Mark 9:29, Acts 10:30 and 1 Corinthians 7:5. However, those
fasting references are believed to be
later additions that were not in the original Bible manuscripts.1
Fasting Not Required
Despite the tradition of fasting in the Bible, and Jesus' references to it, the
New Testament teachings do not require fasting, and neither Jesus nor His disciples
made fasting obligatory. However, a tradition of partial fasting on Wednesdays,
and especially on Fridays dates back to the early days of Christianity.
Church teachings about fasting vary. Many Catholics observe partial fasting traditions
during Lent (the period between Ash Wednesday and Easter). Orthodox Christians observe
even more fasting days. Most Protestant churches do not have any firm rules or traditions
The partial and token fasts observed by some churches are not known to cause
health problems. However, more severe fasting regimens could result in an array of
health problems and even death.2,3 Medical advice is recommended before beginning
a fasting program.
1Wood, D. R. W., & Marshall, I. H. (1996). New Bible dictionary (3rd ed.) (364). Leicester, England; Downers Grove, IL: InterVarsity Press.
2American Cancer Society, Fasting, http://www.cancer.org/
3National Health Service (UK), Fasting: Health Risks, http://www.nhs.uk/