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Public-domain commentary
Matthew Henry
From his Commentary on the Whole Bible. Henry comments on passages, not single verses — this entry covers Isaiah 31:6–9. His three-level outline is real structure in the source text, so it is rendered as structure.
This explains the foregoing promise of the deliverance of Jerusalem; she shall be fitted for deliverance, and then it shall be wrought for her; for in that method God delivers.
I.Jerusalem shall be reformed, and so she shall be delivered from her enemies within her walls, Isa 31:6, Isa 31:7.
Here is, 1. A gracious call to repentance. This was the Lord's voice crying in the city, the voice of the rod, the voice of the sword, and the voice of the prophets interpreting the judgment: "Turn you, O turn you now, from your evil ways, unto God, return to your allegiance to him from whom the children of Israel have deeply revolted, from whom you, O children of Israel! have revolted." He reminds them of their birth and parentage, that they were children of Israel, and therefore under the highest obligations imaginable to the God of Israel, as an aggravation of their revolt from him and as an encouragement to them to return to him. "They have been backsliding children, yet children; therefore let them return, and their backslidings shall be healed. They have deeply revolted, with great address as they supposed (the revolters are profound, Hos 5:2); but the issue will prove that they have revolted dangerously. The stain of their sins has gone deeply into their nature, not to be easily got out, like the blackness of the Ethiopian. They have deeply corrupted themselves (Hos 9:9); they have sunk deep into misery, and cannot easily recover themselves; therefore you have need to hasten your return to God." 2. A gracious promise of the good success of this call (Isa 31:7): In that day every man shall cast away his idols, in obedience to Hezekiah's orders, which, till they were alarmed by the Assyrian invasion, many refused to do. That is a happy fright which frightens us from our sins. (1.) It shall be a general reformation: every man shall cast away his own idols, shall begin with them before he undertakes to demolish other people's idols, which there will be no need of when every man reforms himself. (2.) It shall be a thorough reformation; for they shall part with their idolatry, their beloved sin, with their idols of silver and gold, their idols that they are most fond of. Many make an idol of their silver and gold, and by the love of that idol are drawn to revolt from God; but those that turn to God cast that away out of their hearts and will be ready to part with it when God calls. (3.) It shall be a reformation upon a right principle, a principle of piety, not of politics. They shall cast away their idols, because they have been unto them for a sin, an occasion of sin; therefore they will have nothing to do with them, though they had been the work of their own hands, and upon that account they had a particular fondness for them. Sin is the work of our own hands, but in working it we have been working our own ruin, and therefore we must cast it away; and those are strangely wedded to it who will not be prevailed upon to cast it away when they see that otherwise they themselves will be castaways. Some make this to be only a prediction that those who trust in idols, when they find they stand them in no stead, will cast them away in indignation. But it agrees so exactly with Isa 30:22 that I rather take it as a promise of a sincere reformation.
II.Jerusalem's besiegers shall be routed, and so she shall be delivered from the enemies about her walls.
The former makes way for this. If a people return to God, they may leave it to him to plead their cause against their enemies. When they have cast away their idols, then shall the Assyrian fall, Isa 31:8, Isa 31:9.
1.The army of the Assyrians shall be laid dead upon the spot by the sword, not of a mighty man, nor of a mean man, not of any man at all, either Israelite or Egyptian, not forcibly by the sword of a mighty man nor surreptitiously by the sword of a mean man, but by the sword of an angel, who strikes more strongly than a mighty man and yet more secretly than a mean man, by the sword of the Lord, and his power and wrath in the hand of the angel. Thus the young men of the army shall melt, and be discomfited, and become tributaries to death. When God has work to do against the enemies of his church we expect it must be done by mighty men and mean men, officers and common soldiers; whereas God can, if he please, do it without either. He needs not armies of men who has legions of angels at command, Mat 26:53.
2.The king of Assyria shall flee for the same, shall flee from that invisible sword, hoping to get out of the reach of it; and he shall make the best of his way to his own dominions, shall pass over to some strong-hold of his own, for fear lest the Jews should pursue him now that his army was routed. Sennacherib had been very confident that he should make himself master of Jerusalem, and in the most insolent manner had set both God and Hezekiah at defiance; yet now he is made to tremble for fear of both. God can strike a terror into the proudest of men, and make the stoutest heart to tremble. See Job 18:11; Job 20:24. His princes that accompany him shall be afraid of the ensign, shall be in a continual fright at the remembrance of the ensign in the air, which perhaps the destroying angel displayed before he gave the fatal bow. Or they shall be afraid of every ensign they see, suspecting it is a party of the Jews pursuing them. The banner that God displays for the encouragement of his people (Psa 60:4) will be a terror to his and their enemies. Thus he cuts off the spirit of princes and is terrible to the kings of the earth. But who will do this? It is the Lord, whose fire is in Zion and his furnace in Jerusalem.
(1.)Whose residence is there, and who there keeps house, as a man does where his fire and his oven are. It is the city of the great King, and let not the Assyrians think to turn him out of the possession of his own house.
(2.)Who is there a consuming fire to all his enemies and will make them as a fiery oven in the day of his wrath, Psa 21:9. He is himself a wall of fire round about Jerusalem, so that whoever assaults her does so at his peril, Zac 2:5; Rev 11:5.
(3.)Who has his altar there, on which the holy fire is continually kept burning and sacrifices are daily offered to his honour, and with which he is well pleased; and therefore he will defend this city, especially having an eye to the great sacrifice which was there also to be offered, of which all the sacrifices were types. If we keep up the fire of holy love and devotion in our hearts and houses, we may depend upon God to be a protection to us and them.
Historical interpretation
Historical Reception
One surviving comment on this verse from the historical church.
(Verse 6 onwards) Return, as you have deeply strayed, O children of Israel. For on that day a man will cast away the idols of his silver and the idols of his gold, which your own hands have made for yourselves to sin. And Assur will fall by the sword, not of a man; and a sword, not of a human, will devour him. He will flee not from the face of the sword, and his young men will become forced labor. His strength will pass away in terror, and his fleeing princes will be filled with fear, says the Lord, whose fire is in Zion and whose furnace is in Jerusalem. LXX: Return, O children of Israel, as you have gone deep into sin. For on that day every man will throw away the idols of his silver and the idols of his gold that your own hands have made for your own sins. And Assyria will fall by the sword, not of a man, and a sword, not of a human, will devour him; he will flee, but not from the face of the sword; his young men will be defeated; they will be surrounded like a wall, and they will be conquered; but whoever flees will be captured. Thus says the Lord: Blessed is he who has offspring in Zion and who has a household in Jerusalem. While the Lord fights against his adversaries on Mount Zion and protects it like a rampart, O children of Israel, turn back! As Symmachus translated it: Repent, you who have strayed from the Lord due to deep counsel and sin. For if you do this, casting aside the golden and silver idols that have been a cause of sin for you, because of which your city was captured, Assyria will fall, from whose fear you now flee, not by the sword of men or the strength of an army, but by the power of God. But it signifies that an angel, by whom 185,000 Assyrians were destroyed in one night. Also, the Assyrian king himself will not flee from the sword of men, but from the wrath of God, so that his young and strong men will become tributaries to the Medes, of whom it is said above, in opposition to Babylon: Behold, I will raise up the Medes against you. And the might of Assyria will pass by with the terror of the Lord, and all its princes will tremble. For the Lord has spoken and promised, and what He has said, He has done: and He who has fire in Zion and a furnace in Jerusalem, so that He may consume His adversaries like straw and wood coming out of Jerusalem. Another thing that is said: On that day, a man will throw away his idols of silver and the rest, it is interpreted in such a way that it testifies that after the return from the Babylonian captivity until the coming of Christ, the children of Israel never worshiped idols. Assyria is also signified in the present place, not by an angel, but by the Medes, because it was the most ancient and once powerful kingdom, which was destroyed after offending the Lord, and served the conquerors. The Nazarenes understand this place thus: O children of Israel, who denied the Son of God with wicked counsel, return to Him and His Apostles. For if you do this, you will cast away all the idols that were previously a sin for you, and the devil will fall to you, not by your strength, but by the mercy of God; and its young men who once fought for it will be subjects of the Church, and all its strength and rock will be passed to it; even the philosophers and every perverse doctrine will turn their backs to the sign of the cross. For the opinion of the Lord is that this should be done: whose fire or light is in Zion and his furnace in Jerusalem. Fire and light are written in Hebrew with the same letters Aleph, Vau, Res; if it is read as Ur, it means fire: if Or, it means light. This is said because for the fire, which Symmachus alone interprets, Aquila and Theodotion translate it as light. But I do not know what is meant by what is read in the Septuagint: They will be surrounded like a wall by rock, and they will be conquered: but whoever flees will be captured. Unless perhaps we can say this, that the young men of the Assyrian king who are to be conquered and captured, are surrounded like a rock, that is, by the strength of the Lord, just as a city is surrounded by a wall. Furthermore, what follows: Blessed is the one who has offspring in Zion, and domestic servants in Jerusalem, we can interpret it in such a way as to say that it agrees with the meaning of this place, that the divine word exhorts those who are fleeing to Egypt to return to Jerusalem and to bear children. To whom such great blessedness is promised, that it may be defended and protected by the help of the Lord. And in another place it is written about it: The glory of this last house shall be greater than the glory of the former (Haggai 2:10). Which can also be referred to the Church, the vision of peace and the watchtower, of which it is written: Glorious things are spoken of you, O city of God (Psalm 87:2). And elsewhere: The streams of the river make glad the city of God (Psalm 46:3). For in it there is fire and a furnace that shall devour the sinners, and shall consume the wood, hay, and stubble; or it is a light and an oven, that the brightness of the righteous, and the punishment of the wicked, may be shown.
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Summary
Isaiah 31:8 presents a powerful and definitive prophecy concerning the supernatural downfall of the formidable Assyrian Empire. It declares that Assyria's defeat would not be the result of conventional human warfare, whether by the hand of a powerful warrior or a common soldier, but rather through a direct, divine intervention that would cause their forces to scatter in utter disarray. This declaration serves as a stark rebuke to Judah's inclination to seek security in worldly alliances, particularly with Egypt, profoundly underscoring God's absolute sovereignty and His unique power to deliver His people and execute judgment upon their oppressors.
Context
Literary Context
Isaiah 31:8 is strategically positioned within a larger prophetic unit (chapters 28-33) that primarily addresses Judah's profound spiritual failure in trusting human alliances and their rebellion against the Lord. Specifically, this verse serves as the climactic conclusion to a fervent indictment in Isaiah 31, where the prophet Isaiah passionately condemns Judah for seeking aid from Egypt's chariots and horses rather than relying upon the Holy One of Israel. Verses 1-7 articulate the futility, danger, and spiritual idolatry inherent in such alliances, starkly contrasting human weakness with divine strength. Verse 8 then delivers the ultimate assurance that God Himself will intervene decisively against Assyria, demonstrating that Judah's deliverance would come not through their own efforts or foreign aid, but solely through God's supernatural and unchallengeable power. It transitions from a warning against misplaced human reliance to a glorious promise of divine judgment against the oppressor and ultimate, miraculous protection for Jerusalem.
Historical & Cultural Context
The prophecy in Isaiah 31:8 is deeply embedded in the historical realities of the late 8th century BCE, a period dominated by the aggressive and brutal expansion of the Neo-Assyrian Empire. Under the formidable King Sennacherib, Assyria posed an existential threat to Judah, culminating in the devastating siege of Jerusalem in 701 BCE. King Hezekiah of Judah, despite initiating significant religious reforms and demonstrating faith in God in many respects, also engaged in pragmatic political maneuvering, including forming an alliance with Egypt, which Isaiah vehemently opposed as a betrayal of trust in Yahweh. The Assyrians were renowned for their overwhelming military might, their advanced siege warfare, and their terrifyingly effective psychological tactics, making their defeat by any conventional human army seem utterly improbable. Therefore, the prophecy that Assyria would fall by a "sword, not of a mighty man" directly challenges the conventional understanding of military power, pointing instead to an unprecedented supernatural intervention, as historically recorded in 2 Kings 19:35 and Isaiah 37:36.
Key Themes
This verse powerfully encapsulates several foundational themes prevalent throughout the book of Isaiah. Firstly, it highlights Divine Sovereignty and Intervention, demonstrating God's absolute control over the rise and fall of nations and His unwavering willingness to act decisively on behalf of His covenant people, even when they falter in their faith. The defeat of the seemingly invincible Assyrian Empire by non-human means underscores that Yahweh alone is the true ruler of history. Secondly, it reinforces the Futility of Human Reliance, a recurring and central motif in Isaiah, particularly emphasized in Isaiah 30 and Isaiah 31. Judah's trust in Egyptian military might is exposed as utterly worthless and spiritually dangerous when compared to the omnipotence of God. This theme serves as a timeless call for Judah (and for believers across all generations) to place their complete and undivided trust in God alone. Thirdly, it speaks to God's Protection of Jerusalem, showcasing His unwavering commitment to His holy city and His covenant people, even in the face of overwhelming external threats and internal faithlessness. The "sword, not of a mighty man" foreshadows the miraculous deliverance of Jerusalem from Sennacherib's siege, a profound testament to God's faithfulness and His covenant promises. This divine protection stands in stark contrast to the judgment meted out to proud and oppressive nations, a theme found throughout Isaiah's prophecies against various nations (e.g., Isaiah 13 against Babylon, Isaiah 17 against Damascus).
Exposition and Analysis
Key Word Analysis
This primitive root signifies "to fall" in a wide variety of applications, both literal and figurative. It encompasses meanings such as to be cast down, to cease, to die, to be overthrown, or to collapse. In Isaiah 31:8, its use emphasizes the complete, decisive, and catastrophic collapse of the Assyrian power, indicating not merely a strategic retreat or a minor setback, but a total defeat that would lead to their ultimate demise as a dominant regional force.
This term refers to a cutting instrument, specifically a knife, sword, or other sharp implement, often highlighting its destructive effect. The repeated mention of the "sword" in this verse underscores the violent, decisive, and annihilating nature of Assyria's downfall. However, the crucial qualification "not of a mighty man" or "not of a mean man" transforms this familiar instrument of war into a profound symbol of divine judgment, wielded by an unseen, supernatural hand rather than by human strength or military prowess.
This word is related to a burden or a tax in the form of forced labor, implying a state of being overwhelmed, broken, or in utter confusion. In the context of warfare, it suggests not just defeat but a profound demoralization, panic, and a complete loss of order and cohesion among the Assyrian young men. Their "discomfiture" indicates a rout, a state of terror, and a psychological and spiritual collapse that goes far beyond a mere military setback, pointing to a divinely orchestrated panic and disintegration.
Verse Breakdown
"Then shall the Assyrian fall with the sword, not of a mighty man;"
This opening clause immediately sets the stage for a dramatic and unexpected reversal of fortune for the formidable Assyrian Empire. The "sword" here is not an ordinary weapon wielded by human hands; the phrase "not of a mighty man" (referring to a skilled warrior, general, or even the most powerful human agency) introduces the supernatural element, signaling that the instrument of Assyria's destruction transcends all human capability and points directly to a divine agent.
"and the sword, not of a mean man, shall devour him:"
This second clause powerfully reinforces and expands upon the first, employing Parallelism to intensify the emphasis on the non-human nature of the destructive force. "Mean man" (referring to a common soldier, an ordinary person, or anyone of low degree) further clarifies that absolutely no human, regardless of status, skill, or strength, will be responsible for this decisive defeat. The verb "devour" (H398, ʼâkal') is a strong, vivid, and almost grotesque image, suggesting a complete, utterly consuming, and annihilating destruction of the Assyrian forces, leaving nothing behind.
"but he shall flee from the sword, and his young men shall be discomfited."
This final clause vividly describes the immediate and devastating consequences for Assyria. The Assyrian king ("he") will be forced to "flee" (H5127, nûwç'), indicating a panicked, disorderly, and humiliating retreat rather than an orderly withdrawal or strategic repositioning. Furthermore, his "young men" (H970, bâchûwr'), typically the prime, vigorous, and most confident soldiers—the very strength and elite of an army—will be "discomfited" (H4522, maç'), meaning they will be utterly overwhelmed, demoralized, thrown into profound confusion, and consumed by panic. This paints a comprehensive picture of total collapse, not just a military defeat, but a psychological, spiritual, and organizational shattering of their military might.
Literary Devices
Isaiah 31:8 masterfully employs several Literary Devices to convey its profound and powerful message of divine judgment and deliverance. The most prominent is Parallelism, specifically a combination of synonymous and antithetical parallelism. The phrases "not of a mighty man" and "not of a mean man" are synonymous, reinforcing the same central idea of non-human agency and underscoring the extraordinary nature of the impending judgment. Simultaneously, the stark contrast between Assyria's formidable military might and its actual supernatural, humanly inexplicable defeat creates a powerful antithetical dynamic. This repetition and contrast serve to emphasize the unique and overwhelming nature of God's intervention. Personification is also powerfully evident in the phrase "the sword... shall devour him," attributing an active, consuming, and destructive agency to the weapon itself, further highlighting its divine, rather than human, power and execution. The entire verse functions as a profound Understatement or Litotes, by stating what the sword is not (humanly wielded) to profoundly emphasize what it is (divinely wielded). This rhetorical strategy magnificently magnifies the omnipotence of God and the utter futility of human resistance against His sovereign decree.
Theological and Thematic Connections
Isaiah 31:8 stands as a profound theological statement and a timeless testament to God's unique power and His sovereign control over the affairs of nations. It teaches with undeniable clarity that true security, lasting peace, and ultimate deliverance do not reside in human strength, political alliances, military might, or any visible, tangible resource, but solely in the omnipotence and faithfulness of the Almighty. The "sword, not of a mighty man" is a powerful and enduring metaphor for divine intervention, demonstrating unequivocally that God can achieve what is humanly impossible, often in ways that completely defy conventional understanding and human expectation. This truth serves as a direct challenge to humanity's pervasive tendency to rely on its own ingenuity, resources, and power rather than placing unwavering trust in unseen, divine power. It underscores that God is not merely a distant observer or a passive participant in human history, but its ultimate orchestrator, its righteous judge, and its merciful deliverer, capable of raising up and casting down empires according to His perfect and righteous will.
Reflection and Application
Isaiah 31:8 continues to resonate deeply in contemporary life, offering timeless principles for faith, reliance, and spiritual perspective. In a world that frequently places its ultimate trust in economic stability, political power, technological advancements, military superiority, or even personal self-sufficiency, this verse serves as a potent and necessary reminder that ultimate security and true deliverance come from God alone. When we face overwhelming challenges—whether personal crises, societal injustices, global threats, or spiritual battles—our natural inclination might be to seek immediate human solutions, forge strategic alliances, or rely on our own strength and ingenuity. However, this prophecy calls us to a radical re-evaluation of our sources of trust, urging us to abandon reliance on "horses and chariots" (worldly solutions and human power) and instead to turn wholeheartedly and unreservedly to the Lord. It encourages us to engage in fervent prayer for divine intervention, to cultivate patient waiting for God's perfect timing, and to trust with unwavering faith that His "sword, not of a mighty man" can accomplish what no human effort, no matter how great, could ever achieve, bringing about unexpected victories, profound peace, and glorious vindication.
Questions for Reflection
FAQ
What does "the sword, not of a mighty man; and the sword, not of a mean man" truly mean?
This powerful and poetic phrase emphasizes that the destruction of the formidable Assyrian Empire would not be brought about by any human agency, whether by a highly skilled general or elite warrior (a "mighty man") or by a common soldier or ordinary person (a "mean man"). It signifies that the defeat would be entirely supernatural, a direct and miraculous act of God Himself. This was dramatically fulfilled when the angel of the Lord struck down 185,000 Assyrian soldiers in a single night during Sennacherib's siege of Jerusalem, as vividly recorded in 2 Kings 19:35 and Isaiah 37:36. The "sword" here symbolizes divine judgment and irresistible power, not a literal weapon wielded by human hands.
How was this prophecy fulfilled historically?
The prophecy found its dramatic and literal fulfillment during the reign of King Hezekiah of Judah. When the powerful Assyrian king Sennacherib besieged Jerusalem, threatening to utterly destroy the city and its inhabitants, King Hezekiah turned to the Lord in earnest prayer, encouraged and guided by the prophet Isaiah. In an astonishing and miraculous act of divine intervention, the angel of the Lord struck down 185,000 Assyrian soldiers in their camp in a single night. This devastating and inexplicable blow forced Sennacherib to withdraw his forces and return to Nineveh, saving Jerusalem without a single human battle or military engagement. This pivotal event, detailed in 2 Kings 19 and Isaiah 37, perfectly illustrates the "sword, not of a mighty man" at work, showcasing God's direct, supernatural, and overwhelming protection of His covenant people.
What is the significance of the Assyrian "young men" being "discomfited"?
The "young men" (Hebrew: bâchûwr') typically referred to the prime, vigorous, and most capable soldiers—the very strength, elite, and confident core of an army. For them to be "discomfited" (Hebrew: maç') means they were not merely defeated in battle but utterly demoralized, thrown into profound panic, confusion, and a state of complete disarray and terror. This signifies a psychological and spiritual collapse of the Assyrian forces, far beyond a simple military loss. It highlights the overwhelming and terrifying nature of God's judgment, which not only physically defeats the enemy but also breaks their spirit, shatters their confidence, and leads to a complete rout rather than an orderly retreat. It underscores that God's power can inflict a defeat that undermines the very will to fight.
Christ-Centered Fulfillment
Isaiah 31:8, with its vivid portrayal of a divine "sword" bringing down a formidable enemy without human intervention, points powerfully to the ultimate victory achieved by Jesus Christ. Just as God miraculously delivered Judah from the seemingly insurmountable Assyrian threat, so too does Christ, the true King of Israel and the ultimate deliverer, secure humanity's deliverance from the far greater and more pervasive enemies of sin, death, and the devil. His decisive victory was not achieved through conventional warfare, military might, or human strength, but through His unique, divine power manifested supremely in His sacrificial death on the cross and His glorious resurrection. The "sword, not of a mighty man" foreshadows the spiritual warfare where Christ, through His cross, "disarmed the powers and authorities, he made a public spectacle of them, triumphing over them by the cross" (Colossians 2:15). He did not wield a physical sword, but the "sword of the Spirit, which is the word of God" (Ephesians 6:17), and the power of His divine authority. The "fleeing" and "discomfiture" of the Assyrian young men prefigure the ultimate and eternal defeat of Satan and his demonic forces, who are utterly vanquished by the Lamb of God, whose kingdom is "not of this world" (John 18:36), but is established through divine power. Through Christ's finished work, believers are granted victory over all spiritual adversaries, not by their own might or wisdom, but by the overwhelming power of His resurrection, ensuring that no weapon formed against them shall ultimately prosper (Isaiah 54:17).