King James Version

What Does Isaiah 66:16 Mean?

Isaiah 66:16 in the King James Version says “For by fire and by his sword will the LORD plead with all flesh: and the slain of the LORD shall be many. — study this verse from Isaiah chapter 66 with commentary, cross-references, and original Hebrew word analysis.

For by fire and by his sword will the LORD plead with all flesh: and the slain of the LORD shall be many.

Isaiah 66:16 · KJV


Context

14

And when ye see this, your heart shall rejoice, and your bones shall flourish like an herb: and the hand of the LORD shall be known toward his servants, and his indignation toward his enemies.

15

For, behold, the LORD will come with fire, and with his chariots like a whirlwind, to render his anger with fury, and his rebuke with flames of fire.

16

For by fire and by his sword will the LORD plead with all flesh: and the slain of the LORD shall be many.

17

They that sanctify themselves, and purify themselves in the gardens behind one tree in the midst, eating swine's flesh, and the abomination, and the mouse, shall be consumed together, saith the LORD. behind: or, one after another

18

For I know their works and their thoughts: it shall come, that I will gather all nations and tongues; and they shall come, and see my glory.


Commentary

KJV Study Commentary
The judgment continues: "For by fire and by his sword will the LORD plead with all flesh: and the slain of the LORD shall be many." God "pleads" (shaphat—judges/contends) with all flesh using fire and sword—instruments of warfare and judgment. The comprehensive scope "all flesh" (kol-basar) emphasizes universal judgment—no one escapes scrutiny. "The slain of the LORD shall be many" is sobering—rabbu chalalei Adonai—those slain by God will be numerous. This isn't warfare between humans but divine judgment directly from God. From a Reformed perspective, this describes the final judgment when Christ returns as conquering King (Revelation 19:11-21). The imagery of sword appears in Revelation 19:15, 21: "out of his mouth goeth a sharp sword, that with it he should smite the nations." God's word (sword) and holiness (fire) execute comprehensive judgment on all who opposed Him. The scope is vast—most of humanity faces this judgment (Matthew 7:13-14), tragically confirming the doctrine of particular redemption—many perish, few are saved.

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Historical & Cultural Context

This prophecy was partially fulfilled in historical judgments—Assyria and Babylon destroying nations, Rome destroying Jerusalem (AD 70). Each foreshadowed eschatological judgment. Jesus warned that judgment would be severe (Matthew 24:21-22, Luke 21:20-24). Revelation describes massive casualties when Christ returns to judge (Revelation 14:17-20, 19:17-21). The 'many' who are slain contrasts with the 'remnant' who are saved (Isaiah 10:22, Romans 9:27), confirming that election is particular—God saves some from deserved judgment while justly punishing others. This isn't arbitrary but righteous—all deserve judgment; grace saves some.

Reflection Questions

  1. How should the reality of 'many' being slain in judgment affect our understanding of evangelism's urgency?
  2. What does God 'pleading' with all flesh through judgment reveal about divine justice?
  3. How does the comprehensive scope of judgment ('all flesh') emphasize that no one naturally escapes?

Original Language Analysis

Hebrew · 11 words
כִּ֤י1 of 11
H3588

(by implication) very widely used as a relative conjunction or adverb (as below); often largely modified by other particles annexed

בָאֵשׁ֙2 of 11

For by fire

H784

fire (literally or figuratively)

יְהוָֽה׃3 of 11

of the LORD

H3068

(the) self-existent or eternal; jeho-vah, jewish national name of god

נִשְׁפָּ֔ט4 of 11

plead

H8199

to judge, i.e., pronounce sentence (for or against); by implication, to vindicate or punish; by extenssion, to govern; passively, to litigate (literal

וּבְחַרְבּ֖וֹ5 of 11

and by his sword

H2719

drought; also a cutting instrument (from its destructive effect), as a knife, sword, or other sharp implement

אֶת6 of 11
H854

properly, nearness (used only as a preposition or an adverb), near; hence, generally, with, by, at, among, etc

כָּל7 of 11
H3605

properly, the whole; hence, all, any or every (in the singular only, but often in a plural sense)

בָּשָׂ֑ר8 of 11

with all flesh

H1320

flesh (from its freshness); by extension, body, person; also (by euphemistically) the pudenda of a man

וְרַבּ֖וּ9 of 11

shall be many

H7231

properly, to cast together , i.e., increase, especially in number; to multiply by the myriad

חַֽלְלֵ֥י10 of 11

and the slain

H2491

pierced (especially to death); figuratively, polluted

יְהוָֽה׃11 of 11

of the LORD

H3068

(the) self-existent or eternal; jeho-vah, jewish national name of god


Study Guide

Historical Context

This verse is found in the book of Isaiah. Understanding the historical and cultural background helps illuminate its meaning for the original audience and for us today.

Theological Significance

Isaiah 66:16 contributes to our understanding of God's character and His relationship with humanity. Consider how this verse connects to the broader themes of Scripture.

Cross-References

Verses related to Isaiah 66:16 from Treasury of Scripture Knowledge

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