Deuteronomy 31:21

Translation
King James Version
And it shall come to pass, when many evils and troubles are befallen them, that this song shall testify against them as a witness; for it shall not be forgotten out of the mouths of their seed: for I know their imagination which they go about, even now, before I have brought them into the land which I sware.
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KJV (with Strong's)
And it shall come to pass, when many H7227 evils H7451 and troubles H6869 are befallen H4672 them, that this song H7892 shall testify H6030 against H6440 them as a witness H5707; for it shall not be forgotten H7911 out of the mouths H6310 of their seed H2233: for I know H3045 their imagination H3336 which they go about H6213, even now H3117, before I have brought H935 them into the land H776 which I sware H7650.
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Complete Jewish Bible
then, after many calamities and troubles have come upon them, this song will testify before them as a witness, because their descendants will still be reciting it and will not have forgotten it. For I know how they think even now, even before I have brought them into the land about which I swore."
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Berean Standard Bible
And when many troubles and afflictions have come upon them, this song will testify against them, because it will not be forgotten from the lips of their descendants. For I know their inclination, even before I bring them into the land that I swore to give them.”
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American Standard Version
And it shall come to pass, when many evils and troubles are come upon them, that this song shall testify before them as a witness; for it shall not be forgotten out of the mouths of their seed: for I know their imagination which they frame this day, before I have brought them into the land which I sware.
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World English Bible Messianic
It will happen, when many evils and troubles have come on them, that this song will testify before them as a witness; for it will not be forgotten out of the mouths of their descendants; for I know their ways and what they are doing this day, before I have brought them into the land which I swore.”
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Geneva Bible (1599)
And then when many aduersities and tribulations shall come vpon them, this song shall answere them to their face as a witnesse: for it shall not be forgotte out of the mouthes of their posteritie: for I knowe their imagination, which they goe about euen now, before I haue brought them into the lande which I sware.
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Young's Literal Translation
`And it hath been, when many evils and distresses do meet it, that this song hath testified to its face for a witness; for it is not forgotten out of the mouth of its seed, for I have known its imagining which it is doing to-day, before I bring them in unto the land of which I have sworn.'
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See also
Hosea 5:3John 2:24John 2:25Amos 5:25Amos 5:26Genesis 8:21Genesis 6:5
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In the KJVVerse 5,750 of 31,102

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SUMMARY

Deuteronomy 31:21 profoundly unveils God's omniscient foreknowledge of Israel's future apostasy and the strategic role of a divinely inspired song as an enduring witness against their disobedience. It underscores the Lord's perfect understanding of humanity's inherent inclination toward rebellion, even before the Israelites fully possess the Promised Land, demonstrating His sovereign wisdom in preparing a perpetual testimony to His faithfulness and their covenantal obligations.

CONTEXT

  • Literary Context: This verse is situated within Moses' final discourses to the Israelites, delivered just before his death and their entry into the Promised Land under Joshua's leadership. The immediate preceding verses detail God's command to Moses and Joshua to write down this specific song and teach it to the people, ensuring it remains in their mouths as a witness against them (Deuteronomy 31:19). The song itself is recorded in its entirety in Deuteronomy 32, serving as a powerful prophetic indictment and a historical record. This passage also follows the formal commissioning of Joshua and the reiteration of the covenant stipulations, setting the stage for the inevitable challenges and temptations Israel would face in the land. The song's placement emphasizes its critical role as a prophetic and legal document designed to hold future generations accountable.
  • Historical & Cultural Context: The Israelites are on the cusp of entering Canaan, a land inhabited by pagan nations with idolatrous practices. The Mosaic Covenant, recently reaffirmed, outlined severe consequences for disobedience, including "evils and troubles" (Deuteronomy 28:15-68). In ancient Near Eastern legal traditions, a "witness" (עֵד, 'ed) played a crucial role in establishing truth and guilt, often involving physical objects or enduring testimonies. The concept of a song as a witness was not entirely foreign, as oral traditions and poetic forms were potent means of preserving history, law, and prophecy. God's command to Moses to write this song anticipates Israel's future moral decline, providing a legal and prophetic document that would justify divine judgment when it inevitably came, ensuring that future generations would be without excuse regarding their covenantal responsibilities.
  • Key Themes: Deuteronomy 31:21 powerfully articulates several core themes prevalent throughout Deuteronomy and the broader Pentateuch. Firstly, Divine Foreknowledge is paramount, as God declares His perfect understanding of Israel's future "imagination" or inclination toward sin, even before they have fully settled in the land He promised (Deuteronomy 31:20). This highlights God's omniscience, which transcends time and human free will. Secondly, the Song as a Witness emphasizes the enduring nature of God's Word and its function as a perpetual testimony. This song is not merely a historical record but a living legal document that would "testify against them" (Deuteronomy 31:21) when they strayed, serving as a constant reminder of their covenant obligations and the consequences of their actions, as detailed in the curses of Deuteronomy 28. Thirdly, the theme of Covenant Faithfulness and Human Failure is starkly presented. Despite God's unwavering commitment to His covenant promises, He foresees Israel's inherent tendency to break faith, a recurring motif from the wilderness wanderings (Numbers 14:11) to the warnings in Deuteronomy 9).

EXPOSITION AND ANALYSIS

Key Word Analysis

  • Imagination (Hebrew, yêtser', H3336): The Hebrew word יֵצֶר (H3336, yêtser) refers to a "form," "conception," "purpose," or "inclination." It derives from the verb יָצַר (yatsar), meaning "to form" or "to fashion," often used in the context of a potter shaping clay. Here, it describes the inner bent or disposition of the heart and mind. In biblical theology, yêtser often carries a negative connotation, referring to the evil inclination of humanity, as seen in Genesis 6:5 and Genesis 8:21. In Deuteronomy 31:21, God's knowledge of Israel's yêtser signifies His profound understanding of their inherent, deeply rooted propensity to stray from His commands, even before they fully experience the blessings of the land. It's not just about future actions, but the underlying disposition that drives them.
  • Witness (Hebrew, ʻêd', H5707): The Hebrew word עֵד (H5707, ʻêd) denotes a "witness" or "testimony." In ancient Israelite legal contexts, a witness was crucial for establishing truth and guilt (Deuteronomy 19:15). Here, the "song" is personified as a legal witness, providing irrefutable evidence of Israel's covenant obligations and their subsequent failure. Its enduring presence, "not... forgotten out of the mouths of their seed," ensures that the testimony against them is perpetual and undeniable, justifying God's actions when judgment is enacted. This concept underscores the legal framework of the Mosaic Covenant, where God's warnings are given with full transparency and subsequent judgment is based on clear, attested violations.

Verse Breakdown

  • "And it shall come to pass, when many evils and troubles are befallen them": This clause sets the stage for the song's purpose, indicating a future period of hardship and distress that will befall Israel. These "evils and troubles" are not random misfortunes but the direct, predicted consequences of their covenant unfaithfulness, as outlined in the curses of Deuteronomy 28. God's foreknowledge is evident in His declaration that these calamities "shall come to pass," highlighting the certainty of His prophetic word concerning their future apostasy.
  • "that this song shall testify against them as a witness; for it shall not be forgotten out of the mouths of their seed": Here, the song, which Moses is commanded to write, is assigned a crucial legal and pedagogical function. It will serve as an enduring "witness" or legal testimony against the Israelites, providing irrefutable evidence of their covenant obligations and their subsequent failure. The phrase "it shall not be forgotten out of the mouths of their seed" emphasizes the song's perpetual nature, ensuring that its message—both the covenant's terms and Israel's predicted failure—will be passed down through generations. This guarantees that future generations will be fully aware of their history, their obligations, and the justification for God's judgments.
  • "for I know their imagination which they go about, even now, before I have brought them into the land which I sware": This final clause provides the divine rationale for the song's necessity. God's perfect knowledge (omniscience) of Israel's inner disposition, their "imagination" or "inclination" (yêtser), is the root cause. He understands their inherent propensity to turn away from Him, even at this moment, before they have even entered the Promised Land. This profound insight into human nature underscores God's proactive wisdom in providing a perpetual reminder and witness, not out of a desire for their failure, but in anticipation of it, to call them to repentance and to justify His righteous judgments when their unfaithfulness inevitably manifests.

Literary Devices

Deuteronomy 31:21 employs several powerful literary devices. The primary device is Prophecy, as God explicitly foretells Israel's future apostasy and the resulting "evils and troubles" long before they occur. This is coupled with Foreshadowing, as the song itself is presented as a future witness, anticipating the very events it will testify against. The "song" functions as a potent Symbolism, representing God's enduring Word, His covenant faithfulness, and the indelible record of Israel's history. It is not just a collection of words but a living, active testimony. There is also a subtle form of Anthropomorphism in God stating, "I know their imagination," attributing to God a human-like understanding of internal thoughts and inclinations, though in a divine, perfect, and comprehensive sense. The structure of the verse, moving from predicted outcome to the witness, and then to the divine rationale, creates a compelling and logical argument for the song's vital role in God's sovereign plan for His people.

THEOLOGICAL AND THEMATIC CONNECTIONS

Deuteronomy 31:21 stands as a powerful testament to God's omniscience and His unwavering commitment to justice within the framework of His covenant relationship with Israel. It reveals that God's knowledge is not merely passive awareness but an active, sovereign foreknowledge that informs His redemptive plan and His just judgments. The song serves as a perpetual reminder of the covenant's terms and Israel's inherent tendency to stray, highlighting the deep theological truth that human sinfulness is not merely circumstantial but rooted in a fundamental inner disposition, often referred to as the "evil inclination" in Jewish tradition. This verse underscores the necessity of divine intervention and a profound transformation of the human heart, a theme that echoes throughout salvation history.

REFLECTION AND APPLICATION

Deuteronomy 31:21 offers profound insights for believers today. It reminds us that God's knowledge of our hearts and our predispositions is absolute. He sees beyond our outward actions to the "imagination" of our hearts, understanding our deepest inclinations and potential for sin. This should not lead to despair but to a humble recognition of our desperate need for divine grace and transformation. Just as the song served as an enduring witness for Israel, God's Word today serves as a perpetual guide, a mirror reflecting our true spiritual condition, and a lamp illuminating the path of righteousness. We are called to internalize biblical truths, allowing them to shape our "imagination" and desires, rather than yielding to our fallen nature. The warnings in Scripture are not punitive but redemptive, designed to guide us away from "evils and troubles" and towards life in Christ. Our response to God's foreknowledge of our weaknesses should be a greater reliance on His strength and a deeper commitment to His revealed will, knowing that His warnings are given out of perfect love and wisdom, always aiming for our ultimate good and His glory.

Questions for Reflection

  • How does God's foreknowledge of our "imagination" (inner bent) impact your understanding of His grace and patience?
  • In what ways does God's Word serve as a "witness" in your life, guiding you and holding you accountable?
  • What "evils and troubles" might we avoid today by heeding God's warnings and aligning our hearts with His will?
  • How can we ensure that God's truths are "not forgotten out of the mouths of our seed" (future generations)?

FAQ

Why did God command Moses to write a song instead of just giving a direct command or warning?

Answer: The command to write a song was a strategic divine act, leveraging the power of oral tradition and poetic form for enduring impact. Unlike a simple command or a legal statute, a song is easily memorized, recited, and passed down through generations. Its rhythmic and melodic nature makes it deeply embeddable in the cultural memory, ensuring that its prophetic message—Israel's covenant obligations, their predicted failure, and the consequences—would "not be forgotten out of the mouths of their seed" (Deuteronomy 31:21). This made the song a perpetual "witness" or legal testimony, serving as an undeniable reminder of God's faithfulness and Israel's unfaithfulness, thereby justifying God's actions when judgment inevitably came. It was a divinely inspired pedagogical tool designed for maximum retention and spiritual accountability, demonstrating God's wisdom in communicating His truth in a way that would resonate deeply and endure through time.

CHRIST-CENTERED FULFILLMENT

Deuteronomy 31:21, with its stark portrayal of God's foreknowledge of Israel's inherent rebellion and the necessity of a perpetual witness, powerfully foreshadows the ultimate solution found in Jesus Christ. The "imagination" (yêtser) of Israel's heart, known by God even before they entered the land, points to the universal human condition of sinfulness and depravity, a truth echoed by the Apostle Paul in Romans 3:10-12. The song, serving as a witness against Israel's failure under the Old Covenant, highlights the insufficiency of law and human effort to produce lasting righteousness. This brokenness necessitates a new covenant, where God's law is written not on tablets of stone, but on the heart, as prophesied in Jeremiah 31:33. Jesus Christ is the fulfillment of this new covenant, offering a radical transformation of the "imagination" through the indwelling of the Holy Spirit, enabling believers to walk in newness of life (Romans 8:4). Furthermore, while the song was a witness to Israel's failure, Christ Himself is the ultimate and perfect "witness" to God's truth and love, the faithful and true witness who perfectly fulfilled the Law and bore the consequences of humanity's "imagination" on the cross (2 Corinthians 5:21). Through His sacrifice, He provides the means for a new heart and a renewed mind, overcoming the very "imagination" that led Israel astray, and offering true and lasting peace with God (Philippians 4:7).

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Commentary on Deuteronomy 31 verses 14–21

Here, I. Moses and Joshua are summoned to attend the divine majesty at the door of the tabernacle, Deu 31:14. Moses is told again that he must shortly die; even those that are most ready and willing to die have need to be often reminded of the approach of death. In consideration of this, he must come himself to meet God; for whatever improves our communion with God furthers our preparation for death. He must also bring Joshua with him to be presented to God for a successor, and to receive his commission and charge. Moses readily obeys the summons, for he was not one of those that look with an evil eye upon their successors, but, on the contrary, rejoiced in him.

II. God graciously gives them the meeting: He appeared in the tabernacle (as the shechinah used to appear) in a pillar of a cloud, v. 15. This is the only time in all this book that we read of the glory of God appearing, whereas we often read of it in the three foregoing books, which perhaps signifies that in the latter days, under the evangelical law, such visible appearances as these of the divine glory are not to be expected, but we must take heed to the more sure word of prophecy.

III. He tells Moses that, after his death, the covenant which he had taken so much pains to make between Israel and their God would certainly be broken. 1. That Israel would forsake God, v. 16. And we may be sure that if the covenant between God and man be broken the blame must lie on man, it is he that breaks it; we have often observed it, That God never leaves any till they first leave him. Worshipping the gods of the Canaanites (who had been the natives, but henceforward were to be looked upon as the strangers of that land) would undoubtedly be counted a deserting of God, and, like adultery, a violation of the covenant. Thus still those are revolters from Christ, and will be so adjudged, who either make a god of their money by reigning covetousness or a god of their belly by reigning sensuality. Those that turn to other gods (v. 18) forsake their own mercies. This apostasy of theirs is foretold to be the effect of their prosperity (v. 20): They shall have eaten and filled themselves; this is all they will aim at in eating, to gratify their own appetites, and then they will wax fat, grow secure and sensual; their security will take off their dread of God and his judgments; and their sensuality will incline them to the idolatries of the heathen, which made provision for the flesh to fulfil the lusts of it. Note, God has a clear and infallible foresight of all the wickedness of the wicked, and has often covenanted with those who he knew would deal very treacherously (Isa 48:8), and conferred many favours on those who he knew would deal very ungratefully. 2. That then God would forsake Israel; and justly does he cast those off who had so unjustly cast him off (v. 17): My anger shall be kindled against them, and I will forsake them. His providence would forsake them, no longer to protect and prosper them, and then they would become a prey to all their neighbours. His spirit and grace would forsake them, no longer to teach and guide them, and then they would be more and more bigoted, besotted, and hardened in their idolatries. Thus many evils and troubles would befal them. (v. 17, 21), which would be such manifest indications of God's displeasure against them that they themselves would be constrained to own it: Have not these evils come upon us because our God is not among us? Those that have sinned away their God will find that thereby they pull all mischiefs upon their own heads. But that which completed their misery was that God would hide his face from them in that day, that day of their trouble and distress, v. 18. Whatever outward troubles we are in, if we have but the light of God's countenance, we may be easy. But, if God hide his face from us and our prayers, we are undone.

IV. He directs Moses to deliver them a song, in the composing of which he should be divinely inspired, and which should remain a standing testimony for God as faithful to them in giving them warning, and against them as persons false to themselves in not taking the warning, v. 19. The written word in general, as well as this song in particular, is a witness for God against all those that break covenant with him. It shall be for a testimony, Mat 24:14. The wisdom of man has devised many ways of conveying the knowledge of good and evil, by laws, histories, prophecies, proverbs, and, among the rest, by songs; each has its advantages. And the wisdom of God has in the scripture made use of them all, that ignorant and careless men might be left inexcusable. 1. This song, if rightly improved, might be a means to prevent their apostasy; for in the inditing of it God had an eye to their present imagination, now, before they were brought into the land of promise, Deu 31:21. God knew very well that there were in their hearts such gross conceits of the deity, and such inclinations of idolatry, that they would be tinder to the sparks of that temptation; and therefore in this song he gives them warning of their danger that way. Note, The word of God is a discerner of the thoughts and intents of men's hearts, and meets with them strangely by its reproofs and corrections, Heb 4:12. Compare Co1 14:25. Ministers who preach the word know not the imaginations men go about, but God, whose word it is, knows perfectly. 2. If this song did not prevent their apostasy, yet it might help to bring them to repentance, and to recover them from their apostasy. When their troubles come upon them, this song shall not be forgotten, but may serve as a glass to show them their own faces, that they may humble themselves, and return to him from whom they have revolted. Note, Those for whom God has mercy in store he may leave to fall, yet he will provide means for their recovery. Medicines are prepared before-hand for their cure.

Matthew Henry (1662–1714) — Commentary on the Whole Bible. This section covers verses 14–21. Public domain.
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Source: Quotations drawn from early Church Fathers and historical Christian theologians (AD 100–1500). Some quotes address the surrounding passage context rather than this verse alone.
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