Old Testament — Fasting Passages

Pentateuch

• Exodus 34:28 – Moses fasts 40 days and nights on Sinai
• Leviticus 16:29–31 – Day of Atonement: “afflict your souls” (understood as fasting)
• Leviticus 23:27–32 – Day of Atonement reiterated
• Numbers 9:6–13 – Indirect fasting context tied to mourning
• Deuteronomy 9:9, 18 – Moses’ second 40-day fast

Historical Books

• Judges 20:26 – Israel fasts during national crisis
• 1 Samuel 1:7–8 – Hannah’s grief and fasting
• 1 Samuel 7:6 – National repentance at Mizpah
• 1 Samuel 14:24 – Saul’s ill-advised fast
• 1 Samuel 31:13 – Mourning fast for Saul
• 2 Samuel 1:12 – David fasts for Saul and Jonathan
• 2 Samuel 3:35 – David’s mourning fast
• 2 Samuel 12:16–23 – David fasts for his sick child
• 1 Kings 21:9–12, 27 – Ahab’s (external) repentance through fasting
• 2 Chronicles 20:3 – Jehoshaphat proclaims a fast
• Ezra 8:21–23 – Ezra calls a fast for guidance and protection
• Ezra 10:6 – Ezra fasts over Israel’s sin
• Nehemiah 1:4 – Nehemiah fasts and prays
• Nehemiah 9:1–3 – Corporate fasting and confession
• Esther 4:3, 16 – National and personal fasting for deliverance
• Esther 9:31 – Fasting remembered in Purim context

Poetic & Wisdom Books

• Job 1:20–22 – Mourning actions (implicit fasting)
• Psalm 35:13 – “I humbled my soul with fasting”
• Psalm 69:10 – Fasting linked with reproach
• Psalm 109:24 – Physical effects of fasting
• Daniel 9:3 – Fasting with prayer and confession

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Major Prophets

• Isaiah 58:1–12 – True vs. false fasting (key theological text)
• Jeremiah 14:10–12 – Fasting rejected without repentance
• Daniel 1:8–16 – Partial fast (vegetables and water)
• Daniel 10:2–3 – Daniel’s extended fast

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Minor Prophets

• Joel 1:14 – Call a sacred fast
• Joel 2:12–15 – Fasting tied to repentance
• Jonah 3:5–10 – Nineveh’s citywide fast
• Zechariah 7:3–5 – Questioning the heart behind fasting
• Zechariah 8:19 – Fasts transformed into joy

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New Testament — Fasting Passages

Gospels

• Matthew 4:1–2 – Jesus fasts 40 days
• Matthew 6:16–18 – Instruction on how to fast
• Matthew 9:14–15 – Fasting after the Bridegroom departs
• Matthew 17:21 (textual variant) – Fasting and prayer
• Mark 2:18–20 – Fasting in relation to Jesus’ presence
• Mark 9:29 – Prayer (and fasting, textual variant)
• Luke 2:37 – Anna fasts and prays
• Luke 4:1–2 – Jesus’ wilderness fast
• Luke 5:33–35 – When disciples will fast
• Luke 18:12 – Pharisee’s boastful fasting

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Acts

• Acts 9:9 – Paul’s fast after conversion
• Acts 10:30 – Cornelius fasting before divine guidance
• Acts 13:2–3 – Church fasting before mission commissioning
• Acts 14:23 – Fasting when appointing elders
• Acts 27:9 – Day of Atonement (“the Fast”) referenced

Epistles

• 1 Corinthians 7:5 – Temporary fasting for prayer
• 2 Corinthians 6:5 – Fasting as ministry discipline
• 2 Corinthians 11:27 – Frequent fastings

Theological Summary

Across Scripture, fasting is associated with:

• Repentance (Joel 2; Jonah 3)
• Guidance & decision-making (Ezra 8; Acts 13)
• Mourning & humility (2 Sam 12; Ps 35)
• Spiritual warfare (Matt 4; Acts 14)
• Preparation for divine encounter (Exod 34; Dan 10)

Importantly, Isaiah 58 and Matthew 6 anchor fasting not as ritual performance but as heart-directed humility before God.