Deuteronomy 23:21 · Bible study
Deuteronomy 23:21 Commentary: The Sacred Weight of a Vow
Hebrew · 9 what the commentators say
Meaning in one sentence
Why does the Bible treat a delayed vow as sin? Commentators on Deuteronomy 23:21 show that God takes our spoken promises with total seriousness.
Research Summary
- Meaning: God insists that voluntary promises made to Him must be fulfilled without delay; neglect is sin.
- Key words: “slack/delay” (procrastination, not inability); “require” (exact or demand payment); “sin” (broken covenant relationship).
- Main debate: How much delay is allowed? Jewish tradition permits up to three pilgrimage festivals; the text itself implies immediacy.
- Theological theme: God’s holiness and the integrity of worship; human words spoken before God have lasting weight.
- Best use: Teaching about truthfulness, worship ethics, and the seriousness of promises made in prayer or public commitment.
Translation Comparison
BSB Berean Standard Bible 2020
If you make a vow to the LORD your God, do not be slow to keep it, because He will surely require it of you, and you will be guilty of sin.
WEB World English Bible 2000
When you vow a vow to Yahweh your God, you shall not be slack to pay it, for Yahweh your God will surely require it of you; and it would be sin in you.
KJV King James Version 1769
When thou shalt vow a vow unto the Lord thy God, thou shalt not slack to pay it: for the Lord thy God will surely require it of thee; and it would be sin in thee.
ASV American Standard Version 1901
When thou shalt vow a vow unto Jehovah thy God, thou shalt not be slack to pay it: for Jehovah thy God will surely require it of thee; and it would be sin in thee.
YLT Young's Literal Translation 1898
`When thou vowest a vow to Jehovah thy God, thou dost not delay to complete it; for Jehovah thy God doth certainly require it from thee, and it hath been in thee--sin.
Darby Darby Bible 1890
When thou vowest a vow to Jehovah thy God, thou shalt not delay to perform it; for Jehovah thy God will certainly require it of thee, and it shall be sin in thee.
Douay-Rheims Douay-Rheims Bible 1899
When thou hast made a vow to the Lord thy God, thou shalt not delay to pay it: because the Lord thy God will require it. And if thou delay, it shall be imputed to thee for a sin.
Translations in other languages (10 available)
Cuando prometieres voto á Jehová tu Dios, no tardarás en pagarlo; porque ciertamente lo demandará Jehová tu Dios de ti, y habría en ti pecado.
Quando prometeres voto ao SENHOR teu Deus, não tardarás em pagá-lo; porque certamente o exigirá o SENHOR teu Deus de ti, e haveria em ti pecado.
Si tu fais un vœu à l’ Éternel, ton Dieu, tu ne tarderas point à l’accomplir: car l’ Éternel, ton Dieu, t’ en demanderait compte, et tu te chargerais d’ un péché.
[23:22] Wenn du dem HERRN ein Gelübde tust, so sollst du es nicht verziehen zu halten; denn der HERR, dein Gott, wird' s von dir fordern, und es wird dir Sünde sein.
Wanneer gij den HEERE, uw God, een gelofte zult beloofd hebben, gij zult niet vertrekken die te betalen; want de HEERE, uw God, zal ze zekerlijk van u eisen, en zonde zou in u zijn.
Quando avrai fatto un voto all’Eterno, al tuo Dio, non tarderai ad adempirlo; poiché l’Eterno, il tuo Dio, te ne domanderebbe certamente conto, e tu saresti colpevole;
Jeźlibyś ślubował ślub Panu, Bogu twemu, nie omieszkiwajże oddawać go; bo koniecznie upomni się go Pan, Bóg twój, od ciebie, a będzie na tobie grzech.
Если дашь обет Господу Богу твоему, немедленно исполни его, ибо Господь Бог твой взыщет его с тебя, и на тебе будет грех;
「 你向耶和華─你的 神 許 願，償還 不可 遲延；因為 耶和華─你的 神 必定 向你 追討，你 不償還就有 罪。
When you take an oath to the Lord, do not be slow to give effect to it: for without doubt the Lord your God will make you responsible, and will put it to your account as sin.
Verse in Context
Scholars' Consensus
Commentators across traditions agree on the central meaning: a vow made to God carries an immediate, sacred obligation that must be fulfilled without procrastination. Calvin calls a vow a “sacred engagement” with God Himself, linked to the Third Commandment against taking the Lord’s name in vain. To withhold payment is to “diminish the glory of God’s name.” Gill adds that a vow must be of something lawful and within a person’s power, and delay itself is forbidden because zeal fades and ability may slip away. Keil and Delitzsch state flatly that vows to the Lord “were to be fulfilled without delay,” while Wesley observes that delay “may make them both unable to pay it, and unwilling too.” The shared conviction is that God does not treat our spoken words as casual; He hears, He remembers, and He requires. To treat a promise to God lightly is not a minor failure, it is sin.
How settled is the interpretation?
Interpretive difficulty: Low
What is clear: God expects His people to fulfill their voluntary promises to Him without procrastination; to delay is to treat His name lightly and is counted as sin.
What Scholars Agree and Debate
| Topic | Agreed | Debated |
|---|---|---|
| Freedom not to vow | All traditions acknowledge that making a vow is voluntary; refraining is not sin (v.22). | Some Christians argue that certain commitments (e.g., baptism, marriage vows) are obligatory and not purely voluntary, while others see even these as free responses to grace. |
| Timing of payment | No commentator defends indefinite delay; the call to prompt performance is universal. | A minority Jewish interpretation allows delay until after three annual feasts, but most Christian readings insist on immediate fulfillment to avoid spiritual cooling. |
| Applicability to Christians | The principle that God expects integrity in promises remains valid across testaments. | Some traditions see the Old Testament vow system as superseded by Christ, viewing all of life as a vow; others maintain that specific vows (e.g., religious orders) are still practiced. |
| What constitutes a vow | A vow is a voluntary, explicit promise to God, distinguished from ordinary intentions. | Disagreement exists over whether promises made in prayer privately qualify as vows, or whether they must be formal and public (Numbers 30:2 suggests formal language). |
Historical & Cultural Context
In ancient Israel, a vow (Hebrew neder) was a voluntary promise to dedicate something, a person, an animal, money, or an offering, to the Lord. Vows were often responses to divine blessing or deliverance. Jacob vowed at Bethel (Genesis 28:20): “If God will be with me… then Yahweh shall be my God.” A vow was not commanded; the very next verse (Deuteronomy 23:22) says refraining from vowing is no sin. But once spoken, the matter became binding. The law here sits among rules about purity, usury, and the sanctuary, a context that guards the holiness of everything brought into worship. Verse 18 explicitly forbids bringing the “hire of a prostitute” into God’s house for a vow, showing that both the promise and the gift must be clean.
Calvin roots the obligation in the Third Commandment: a vow is a kind of oath, and breaking it profanes God’s name. The surrounding laws in Deuteronomy 23 protect the community’s worship from corruption, whether from forbidden earnings, improper vows, or broken promises. For the Israelite, a vow was not merely a private resolution; it was a transaction with the living God, witnessed by heaven and earth. This seriousness reflects a culture where words carried weight, especially those spoken in the presence of Yahweh.
Textual Notes
The consulted sources note no significant textual variants for Deuteronomy 23:21. The verse is stable across the Hebrew manuscript tradition and all major English translations. The reading is not disputed.
Reception History
Jewish tradition has treated this verse as foundational for the laws of vows (Mishnah Nedarim and Shevuot). The Talmud discusses delays, annulments, and the authority of a father or husband over a woman’s vow (see Numbers 30). In Christian history, the verse was frequently cited by the Church Fathers to urge seriousness toward promises made at baptism or in times of crisis. Calvin, in his commentary, develops the link to the Third Commandment, arguing that all sacred promises, not only explicitly called vows, fall under this rule. The verse has also been used to critique casual “vows” made in prayer that are later forgotten, reminding believers that God remembers what we have spoken.
Preaching This Verse
Three-point outline
- The nature of a vow: A voluntary, sacred promise made to God, freely chosen, but once uttered, absolutely binding.
- The command: “You shall not be slack to pay it.” Delay itself is disobedience, not merely forgetfulness or inconvenience.
- The consequence: God “will surely require it,” and failing to pay is sin, not a slip, but a breach of covenant loyalty.
Five-point outline
- Freedom to vow or not: Verse 22 makes clear that omitting to vow is no sin. God does not coerce promises.
- Once spoken, it is sacred: The vow becomes a bond (Numbers 30:2).
- Delay is dangerous: Slowness erodes zeal, ability, and memory. The heart cools; the hand loses strength.
- God requires it: The passive “will surely require” implies divine enforcement. He will not let a broken vow go.
- The positive call: “You shall observe and do that which has gone out of your lips” (v.23). Integrity starts with the mouth.
Illustration hooks
- A person promises a neighbour help with a move but keeps putting it off until the neighbour finds someone else. The broken promise damages trust.
- A parent tells a child, “I’ll take you to the park tomorrow,” but keeps postponing. The child learns that words do not bind.
- When a community makes financial pledges to a building project, some pay quickly, others delay until momentum fades. The delay affects the whole body.
Questions your congregation is asking
- “Is it a sin to make a promise to God in prayer and then forget about it?”
- “What counts as a ‘vow’ today? Are church membership promises or baptismal vows in the same category?”
- “Does this verse mean I can never change my mind about a religious commitment?”
Leading a Discussion
This verse challenges our casual culture of promises. We make them quickly, break them quietly, and seldom feel the weight. But the Bible treats a vow to God with deadly seriousness. Before we explore the text, consider: what promises have you made to God in the past, quietly, in prayer, or publicly? What happened to them?
Discussion questions
- Read Deuteronomy 23:21, 23. What does the passage say about delaying a vow? Why does Moses treat delay as sin rather than just a mistake?
- Notice the immediate context: v.18 forbids bringing the “hire of a prostitute” for a vow. What does that tell you about the kind of offerings God accepts?
- Why does the Bible give so much space to vows (Numbers 30; Leviticus 27)? What does this reveal about God’s character?
- Calvin says a vow is a “sacred engagement” linked to the Third Commandment. How is breaking a vow similar to taking God’s name in vain?
- Verse 22 says it is no sin to refrain from vowing. Does this freedom encourage us to avoid making promises to God? Or does it underline that once we have spoken, we are bound?
- What are some modern equivalents of “vows”? Think of promises made at baptism, church membership, confirmation, ordination, or in personal prayer.
- If you have ever broken a promise to God, how might this passage lead you to repentance rather than guilt? What does it say about God’s mercy alongside His requirement?
Cross-References
Source: Treasury of Scripture Knowledge (TSK, public domain)
| Genesis 28:20 | Jacob vowed a vow, saying, “If God will be with me, and will keep me in this way that I go, and will give me bread to eat, and clothing to put on, |
| Genesis 35:1 | God said to Jacob, “Arise, go up to Bethel, and live there. Make there an altar to God, who appeared to you when you fled from the face of Esau your brother.” |
| Genesis 35:3 | Let’s arise, and go up to Bethel. I will make there an altar to God, who answered me in the day of my distress, and was with me on the way which I went.” |
| Leviticus 27:2 | “Speak to the children of Israel, and say to them, ‘When a man consecrates a person to Yahweh in a vow, according to your valuation, |
| Leviticus 27:34 | These are the commandments which Yahweh commanded Moses for the children of Israel on Mount Sinai. |
| Numbers 30:1 | Moses spoke to the heads of the tribes of the children of Israel, saying, “This is the thing which Yahweh has commanded. |
| Numbers 30:2 | When a man vows a vow to Yahweh, or swears an oath to bind his soul with a bond, he shall not break his word. He shall do according to all that proceeds out of his mouth. |
| Numbers 30:16 | These are the statutes which Yahweh commanded Moses, between a man and his wife, between a father and his daughter, being in her youth, in her father’s house. |
Cross-reference data from OpenBible.info (CC BY 4.0). Commentaries are public domain.
For personal reflection
Read the devotional page — prayer, application, and "for families"
What the Commentators Say
8 public-domain commentaries, condensed into plain language.
Adam Clarke's Commentary Methodist/Wesleyan 1826
Clarke refers readers to his fuller discussion on Numbers 30:2, indicating that the instruction on vows here repeats the same principle. His distinctive contribution is treating both passages as a single unit, so the earlier explanation of binding vows and their solemnity applies equally to this verse.
Calvin's Commentaries Reformed 1564
Calvin treats a vow as a form of swearing, a sacred agreement made directly with God rather than merely among people. He adds that acceptable vows were testimonies of gratitude, which the saints used as a deliberate spur to correct their slowness in proclaiming God's goodness.
Geneva Bible Notes Reformed 1599
The Geneva note emphasizes that delaying payment of a vow to God is not a minor fault but actual sin. God Himself will require what was promised, so the believer must not be slack. Prompt fulfillment is the only proper response to a vow made before the Lord.
Gill's Exposition of the Bible Baptist 1748
Gill stresses that a lawful vow must be of something in a person's power, permitted by God, and voluntary beyond what is already required. Delaying payment is sin because zeal can fade and ability may change; Jewish tradition allowed until three festivals had passed before the law was broken.
Jamieson-Fausset-Brown Commentary Protestant 1871
JFB treats these verses as a direct reference to the law on vows given in Numbers 30:2, implying that the same principles apply here. The point is that a vow made to the Lord is binding and must be kept faithfully.
Keil & Delitzsch OT Commentary Protestant 1876
Keil-Delitzsch makes a careful distinction: while a vow once made must be fulfilled without delay, never making the vow is not a sin. They also highlight the Hebrew word "nedabah" to show the offering is a matter of free will, given spontaneously, not under compulsion.
Matthew Henry's Commentary Reformed/Presbyterian 1710
For Matthew Henry, the command to shelter an escaped servant turns the land of Israel into a sanctuary for the oppressed. The law protects a fugitive from a harsh master, granting him freedom to settle where he chooses. Israel's borders become a place of refuge for the abused, not a place to return them to bondage.
Wesley's Explanatory Notes Methodist/Wesleyan 1754
Wesley draws a sharp distinction between being slack and merely delaying. Slackness, he argues, is worse than delay because delays can gradually rob a person of both the ability and the willingness to fulfill an obligation.