Greek word · G3522

νηστεύω

nēsteuō

to fast

To go without food, sometimes without drink as well, for religious reasons. In biblical and Second Temple Judaism, fasting went with mourning (2 Sam 1:12; 12:16–23), repentance and pleading for mercy (Joel 2:12; Jonah 3:5), and humbling oneself before God.

Appears 20 times in 15 verses of the Greek New Testament. ·

What it means

νηστεύω

(νῆστις), [in LXX for צוּם ;]

to fast (Arist., Aristoph., al.): Matthew 4:2 6:16-18 9:14-15 Mark 2:18-20, Luke 5:33-35 18:12, Acts 13:2-3.†

(AS)

From G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), via STEPBible.org (CC BY 4.0).

In depth

From the study of Matthew 4:2

Range of meaning

To go without food, sometimes without drink as well, for religious reasons. In biblical and Second Temple Judaism, fasting went with mourning (2 Sam 1:12; 12:16–23), repentance and pleading for mercy (Joel 2:12; Jonah 3:5), and humbling oneself before God. The Day of Atonement command to "afflict yourselves" (Lev 16:29) was understood as a fast. Fasting also prepared a person to meet God or receive revelation (Exod 34:28; Dan 9:3; 10:2–3). It was an act of the whole person humbling himself, not a technique.

Against the English

English "fast" is accurate. Modern use, though, includes partial fasts (giving up one food), health or weight-loss fasting, and intermittent eating schedules. None of these is in view. Luke's parallel says plainly that Jesus "ate nothing in those days" (Luke 4:2).

How it drifted

The English word has not changed. What it brings to mind has: medical and diet fasting, and Lenten customs of giving up one item.

Used elsewhere in the period

LXX: Judg 20:26; 1 Sam 7:6; 2 Sam 12:16–23; Zech 7:5; Isa 58:3–6. Esther 4:16 calls for a fast with no eating or drinking "night or day," a close parallel to the 'and nights' here. Pharisees fasted twice a week (Luke 18:12), and the Didache (8:1) moves Christian fasting to Wednesdays and Fridays. Philo (Life of Moses 2.69) says Moses went forty days without food or drink, sustained by contemplation. The Apocalypse of Abraham (12:1–2, probably late 1st or 2nd century CE) has Abraham fast forty days and nights, his 'food' being the sight of the angel.

From the study of Matthew 6:16

Range of meaning

To abstain from food, usually from sunrise to sunset or for a full day, sometimes longer and sometimes including drink. It was done as a religious act: mourning, repentance, humbling oneself before God, intense petition, or preparing to receive a revelation.

Against the English

English 'fast' is accurate. Modern readers, though, may think of fasting as a private spiritual discipline or a health practice. In Jesus' world it was visible and social, and it came bundled with a whole set of mourning customs.

Used elsewhere in the period

In the Septuagint it renders Hebrew ṣûm. The Law requires only the Day of Atonement fast, 'you shall humble/afflict yourselves' (Lev 16:29–31). Others were added later (Zech 7:5; 8:19; Esther 4:16). Pious Jews of Jesus' day fasted often: the Pharisee in Luke 18:12 fasts 'twice a week', and Didache 8:1 (around AD 100) mentions Mondays and Thursdays as the 'hypocrites'' fast days. The Mishnah tractate Taanit describes public fasts for rain.

From the study of Matthew 6:18

Range of meaning

To fast: to go without food, and often drink, for a set time as a religious act linked to mourning, repentance, humbling oneself before God, or urgent prayer.

Against the English

"Fast" is accurate. A modern reader may think of a diet, a detox, or a spiritual technique for results. A first-century Jew thought of acts of mourning and humbling the self: sackcloth, ashes, an unwashed body, no oil.

Used elsewhere in the period

In the Septuagint it often translates Hebrew tsum. The required national fast was the Day of Atonement ("afflict yourselves", Lev 16:29). There were also communal fasts in times of disaster (Joel 2:12–15) and private fasts (Ps 35:13). Pharisees fasted twice a week (Luke 18:12), which tradition puts on Monday and Thursday. Didache 8:1 tells Christians to fast on Wednesday and Friday, "not with the hypocrites." Tobit 12:8 pairs prayer, fasting and almsgiving, the same three as Matt 6:1–18.

Where it appears

Matthew · 8
  1. Matthew 4:2 νηστεύσας having fasted

    After fasting forty days and forty nights, He was hungry.

    Here: "Having fasted." The form describes the whole fast as finished before the main verb. The forty days are one completed block, and only then does the hunger come. For a Jew, fasting meant going without food to humble oneself before God. It was not a diet or a partial cutback.

  2. Matthew 6:16 νηστεύητε, νηστεύοντες. you may fast,, [as] fasting.

    When you fast, do not be somber like the hypocrites, for they disfigure their faces to show men they are fasting. Truly I tell you, they already have their full reward.

    Here: To go without food (and often drink) for a set period as a religious act, usually tied to mourning, repentance or urgent petition. Plural 'you all': it addresses the listening community.

  3. Matthew 6:17 νηστεύων fasting

    But when you fast, anoint your head and wash your face,

    Here: A present participle, 'while fasting' or 'when you are fasting'. It describes the ongoing state during which the grooming happens. It assumes the disciple *will* fast: Jesus regulates how fasting is done, not whether.

  4. Matthew 6:18 νηστεύων [as] fasting

    so that your fasting will not be obvious to men, but only to your Father, who is unseen. And your Father, who sees what is done in secret, will reward you.

    Here: "As one who is fasting". The participle completes "be seen": the thing not to be seen is your fasting. You really are fasting. Only the display is forbidden.

  5. Matthew 9:14 νηστεύομεν νηστεύουσιν;¶ do fast, fast?

    Then John’s disciples came to Jesus and asked, “Why is it that we and the Pharisees fast so often, but Your disciples do not fast?”

    Here: 'We fast', present tense for an ongoing, regular practice. It means going without food (often drink too), usually from dawn to dusk, as an act of mourning, repentance, and humbling oneself before God.

  6. Matthew 9:15 νηστεύσουσιν. they will fast.

    Jesus replied, “How can the guests of the bridegroom mourn while He is with them? But the time will come when the bridegroom will be taken from them; then they will fast.

    Here: Future tense: a prediction that also approves of the practice. When the time comes, fasting will fit, because it will express grief at the groom's absence.

Mark · 6
  1. Mark 2:18 νηστεύοντες νηστεύουσιν, νηστεύουσιν;¶ fasting, fast,, fast?

    Now John’s disciples and the Pharisees were often fasting. So people came to Jesus and asked, “Why don’t Your disciples fast like John’s disciples and those of the Pharisees?”

  2. Mark 2:19 νηστεύειν; νηστεύειν. to fast?, to fast.

    Jesus replied, “How can the guests of the bridegroom fast while He is with them? As long as He is with them, they cannot fast.

    Here: To go without food as a religious act. In that culture fasting expressed mourning, sorrow for sin, or humbling oneself before God.

  3. Mark 2:20 νηστεύσουσιν they will fast

    But the time will come when the bridegroom will be taken from them; then they will fast.

    Here: Future tense. The disciples will go without food, a recognised sign of mourning and grief. It reads as a prediction, and it also gives permission for later fasting.

Luke · 4
  1. Luke 5:33 νηστεύουσιν fast

    Then they said to Him, “John’s disciples and those of the Pharisees frequently fast and pray, but Yours keep on eating and drinking.”

  2. Luke 5:34 νηστεῦσαι; to fast?

    Jesus replied, “Can you make the guests of the bridegroom fast while He is with them?

  3. Luke 5:35 νηστεύσουσιν they will fast

    But the time will come when the bridegroom will be taken from them; then they will fast.”

  4. Luke 18:12 νηστεύω I fast

    I fast twice a week and pay tithes of all that I acquire.’

    Here: Present tense of a repeated habit: 'I keep fasting', 'I regularly fast'. In Jewish practice this meant going without food (and often drink) from dawn to evening as an act of humbling oneself before God. It opens the sentence for emphasis: the first credential he names.

Acts · 2
  1. Acts 13:2 νηστευόντων fasting

    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.”

    Here: "And fasting." Going without food on purpose, a standard Jewish practice that went with prayer and seeking God. The present tense means the fast was under way when the word came.

  2. Acts 13:3 νηστεύσαντες having fasted

    And after they had fasted and prayed, they laid their hands on them and sent them off.

    Here: 'Having fasted.' They were already fasting when the Spirit spoke (13:2). Now they fast again, or keep fasting, before they act on what they heard. Fasting went with seeking God's will at a serious moment.

Word data: STEPBible.org (CC BY 4.0), main text only.