What is the true meaning of fasting?
BREAKDOWN
The true meaning of fasting, from a biblical perspective, extends far beyond mere physical abstinence from food or drink. It is fundamentally an act of humble self-denial and spiritual discipline, designed to reorient one's entire being towards God. Throughout Scripture, fasting is portrayed not as an end in itself, but as a means to a deeper spiritual communion, repentance, supplication, and sensitivity to the divine will. It is a declaration that one's hunger for God and His righteousness surpasses physical desires. The prophets, especially Isaiah, vehemently condemned fasting that was performed for outward show or while neglecting justice and compassion. Isaiah 58:3-7 powerfully illustrates that true fasting is about 'loosing the bonds of wickedness, undoing the straps of the yoke, letting the oppressed go free, and breaking every yoke,' culminating in acts of generosity and care for the needy. This spiritual integrity is crucial, as illustrated by Jesus in Matthew 6:16-18, where He warns against hypocritical fasting done 'to be seen by men,' advocating for private devotion rewarded by the Father. Fasting served various purposes in biblical history: a sign of national and personal repentance (Joel 2:12-13, Jonah 3:5-10), a means of seeking God's guidance in significant decisions (Ezra 8:21, Acts 13:2-3), an expression of grief and mourning (1 Samuel 31:13), and a deepening of prayer and intercession (Daniel 9:3). It was often accompanied by sackcloth, ashes, and intense prayer, symbolizing humility and earnest seeking. The core theological principle is that by denying the natural cravings of the body, the spirit becomes more attuned to the things of God. It is a reordering of priorities, a spiritual discipline that crucifies the flesh and elevates the spirit, allowing believers to engage more deeply with God's presence and purpose. It is never a transactional effort to 'earn' God's favor, but a posture of humility that prepares the heart to receive it.
KEY TERMS
humble self-denial
The act of willingly abstaining from personal desires or comforts, often food, as a means of spiritual discipline and submission to God.
Isaiah 58:3-7
A pivotal passage in the Bible that defines true fasting as acts of justice, compassion, and liberation for the oppressed, rather than mere physical abstinence.
Matthew 6:16-18
A teaching by Jesus emphasizing the importance of private and sincere fasting, warning against hypocritical acts performed for public recognition.
afflicting the soul
A biblical phrase, particularly associated with Yom Kippur, referring to a broader spiritual humbling and self-denial that includes fasting but implies an inward attitude of penitence.
spiritual discipline
Practices undertaken by believers to foster spiritual growth, character development, and closeness to God, such as prayer, fasting, and Scripture study.
SCRIPTURE REFERENCES
Isaiah 58:3
‘Why have we fasted,’ they say, ‘and you don’t see it? Why have we afflicted our soul, and you don’t notice?’ “Behold, in the day of your fast, you find pleasure, and oppress all your laborers.
Isaiah 58:4
Behold, you fast for strife and contention, and to strike with a wicked fist. You shall not fast as you do today, to make your voice to be heard on high.
Isaiah 58:5
Is such the fast that I have chosen? The day for a man to afflict his soul? Is it to bow down his head like a reed, and to spread sackcloth and ashes under him? Will you call this a fast, and an acceptable day to Yahweh?
Isaiah 58:6
“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?
Isaiah 58:7
Isn’t it to share your bread with the hungry, and that you bring the poor who are cast out to your house? When you see the naked, that you cover him; and that you not hide yourself from your own flesh?
Matthew 6:16
“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.
Matthew 6:17
But you, when you fast, anoint your head, and wash your face,
Matthew 6:18
so that you are not seen by men to be fasting, but by your Father who is in secret, and your Father, who sees in secret, will reward you openly.
Joel 2:12
“Yet even now,” says Yahweh, “turn to me with all your heart, with fasting, with weeping, and with mourning.”
Joel 2:13
Tear your heart, and not your garments, and turn to Yahweh, your God; for he is gracious and merciful, slow to anger, and abundant in loving kindness, and relents from sending calamity.
Ezra 8:21
Then I proclaimed a fast there, at the river Ahava, that we might humble ourselves before our God, to seek of him a straight way for us, and for our little ones, and for all our substance.
Acts 13:2
As they served the Lord and fasted, the Holy Spirit said, “Separate Barnabas and Saul for me, for the work to which I have called them.”
Acts 13:3
Then, when they had fasted and prayed and laid their hands on them, they sent them away.
Psalm 35:13
But as for me, when they were sick, my clothing was sackcloth. I afflicted my soul with fasting. My prayer returned into my own bosom.
1 Samuel 31:13
and they took their bones, and buried them under the tamarisk tree in Jabesh, and fasted seven days.
Daniel 9:3
I set my face to the Lord God, to seek by prayer and petitions, with fasting and sackcloth and ashes.
INTERLINEAR ANALYSIS
ORIGINAL LANGUAGE ANALYSIS
צוֹם
fasting
DefinitionA fast; abstinence from food.
ענה נפש
afflicted my soul
DefinitionTo humble or afflict the soul; to deny oneself.
νηστεία
fast
DefinitionFasting; abstinence from food.
ענה
humble
DefinitionTo be bowed down, afflicted, humble, submissive.
HISTORICAL CONTEXT
Fasting was a deeply ingrained spiritual practice across the ancient Near East, not unique to Israel, but its purpose and meaning evolved significantly within Israelite and later Jewish and Christian contexts. In Mesopotamia and Egypt, fasting was often associated with mourning, specific religious rituals, or petitioning deities. For ancient Israel, fasting became a more formalized expression of humility, penitence, and intense devotion to Yahweh. The Day of Atonement (Yom Kippur) was the only divinely mandated fast (Leviticus 16:29, 23:27-32), where 'afflicting the soul' (ענה נפש, *anah nefesh*) primarily involved abstaining from food and drink, but also labor and marital relations, symbolizing a profound self-abasement before God. Over time, additional communal fasts were instituted, particularly after the destruction of the First Temple (e.g., Zechariah 8:19), commemorating national tragedies. By the Second Temple period, extra-biblical fasts had become common, observed by devout individuals like Anna (Luke 2:37) and the Pharisees (Luke 18:12), though Jesus critically addressed the hypocrisy that could accompany such practices. Early Christians continued the practice, particularly before significant ministry decisions (Acts 13:2-3, 14:23), integrating it as a spiritual discipline for communion with God and preparing for service.
THEOLOGICAL INSIGHT
The theological insight into fasting reveals it as a potent spiritual discipline rooted in humility, seeking to subordinate the physical appetite to spiritual hunger. It serves not as a means to manipulate God, but to align the human will with the divine, fostering a deeper sensitivity to God's voice and purposes. True fasting is characterized by sincerity of heart, genuine repentance, and a commitment to justice and righteousness, mirroring God's own character. It is an act of intensified prayer and consecration, recognizing that God is the ultimate sustainer and guide, and that a life devoted to Him transcends earthly needs and desires, ultimately leading to spiritual strength and divine favor.
COMMENTARY SYNTHESIS
Rashi (Jewish)
Commenting on Isaiah 58, Rashi emphasizes that God is not impressed by mere physical abstinence, but by a heart broken in repentance and actions that demonstrate justice and charity towards one's fellow man. He interprets 'afflict your soul' as more than denying food; it must involve true remorse and a commitment to moral rectitude.
John Calvin (Christian)
Calvin, in his Institutes of the Christian Religion, views fasting primarily as an aid to prayer, a sign of repentance, and a means of mortifying the flesh. He stresses that true fasting must be free from superstition and hypocrisy, focused on drawing closer to God and subduing sinful desires, rather than meriting favor.
Matthew Henry (Christian)
Regarding Matthew 6:16-18, Matthew Henry highlights that fasting is a duty of natural religion and an act of devotion, but it must be performed with proper motivations – to God, not to gain human applause. He warns against making a show of piety, asserting that sincerity and privacy are essential for God to accept and reward the fast.
Maimonides (Rambam) (Jewish)
In his Mishneh Torah, Maimonides discusses the laws of fasting, particularly Yom Kippur, stating its purpose is to arouse individuals to repentance, to reflect on their deeds, and to return to God. He emphasizes the internal spiritual purification and self-examination that accompanies the physical act of fasting.
Augustine of Hippo (Christian)
Augustine, in his sermons, often linked fasting with prayer and almsgiving, viewing them as a triumvirate of Christian discipline. He understood fasting not as a punishment of the body, but as a discipline that frees the spirit from earthly attachments, enabling it to focus more fully on God and acts of charity.