Passage

Isaiah 1.18

Book: Isaiah · ASV / WEB / KJV / YLT

Verse

ASV:

"18. Come now, and let us reason together, saith Jehovah: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool." (Isaiah 1:18, ASV)

WEB:

"18. “Come now, and let us reason together,” says Yahweh: “Though your sins be as scarlet, they shall be as white as snow. Though they be red like crimson, they shall be as wool." (Isaiah 1:18, WEB)

KJV:

"18. Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool." (Isaiah 1:18, KJV)

YLT:

"18. Come, I pray you, and we reason, saith Jehovah, If your sins are as scarlet, as snow they shall be white, If they are red as crimson, as wool they shall be!" (Isaiah 1:18, YLT)

Immediate context (±2 verses)

ASV (ASV)

"16. Wash you, make you clean; put away the evil of your doings from before mine eyes; cease to do evil; 17. learn to do well; seek justice, relieve the oppressed, judge the fatherless, plead for the widow."

"18. Come now, and let us reason together, saith Jehovah: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool."

"19. If ye be willing and obedient, ye shall eat the good of the land: 20. but if ye refuse and rebel, ye shall be devoured with the sword; for the mouth of Jehovah hath spoken it." (Isaiah 1:16-20, ASV)

WEB (WEB)

"16. Wash yourselves, make yourself clean. Put away the evil of your doings from before my eyes. Cease to do evil. 17. Learn to do well. Seek justice. Relieve the oppressed. Judge the fatherless. Plead for the widow.”"

"18. “Come now, and let us reason together,” says Yahweh: “Though your sins be as scarlet, they shall be as white as snow. Though they be red like crimson, they shall be as wool."

"19. If you are willing and obedient, you shall eat the good of the land; 20. but if you refuse and rebel, you shall be devoured with the sword; for the mouth of Yahweh has spoken it.”" (Isaiah 1:16-20, WEB)

KJV (KJV)

"16. Wash you, make you clean; put away the evil of your doings from before mine eyes; cease to do evil; 17. Learn to do well; seek judgment, relieve the oppressed, judge the fatherless, plead for the widow."

"18. Come now, and let us reason together, saith the LORD: though your sins be as scarlet, they shall be as white as snow; though they be red like crimson, they shall be as wool."

"19. If ye be willing and obedient, ye shall eat the good of the land: 20. But if ye refuse and rebel, ye shall be devoured with the sword: for the mouth of the LORD hath spoken it." (Isaiah 1:16-20, KJV)

YLT (YLT)

"16. Wash ye, make ye pure, Turn aside the evil of your doings, from before Mine eyes, Cease to do evil, learn to do good. 17. Seek judgment, make happy the oppressed, Judge the fatherless, strive [for] the widow."

"18. Come, I pray you, and we reason, saith Jehovah, If your sins are as scarlet, as snow they shall be white, If they are red as crimson, as wool they shall be!"

"19. If ye are willing, and have hearkened, The good of the land ye consume, 20. And if ye refuse, and have rebelled, [By] the sword ye are consumed, For the mouth of Jehovah hath spoken." (Isaiah 1:16-20, YLT)

Setting

Speaker: YHWH speaking through Isaiah son of Amoz
Audience: Judah in spiritual rebellion under Uzziah / Jotham / Ahaz / Hezekiah (8th c. BC), the people of God who have abandoned the covenant
Location: Jerusalem and Judah
Time period: prophetic ministry c. 740-680 BC; chapter 1 likely from the late Uzziah / early Jotham era (c. 740-735 BC)
Narrative context: the opening indictment chapter of Isaiah. The book opens with a comprehensive critique of Judah's empty religion: external religious observance combined with moral corruption (vv. 11-15, God despises their sacrifices because their hands are full of blood). Verses 16-17 list the moral demands (cease evil; learn good; seek justice; care for the oppressed, the fatherless, the widow). Verse 18 then transitions from indictment to invitation: "Come now, and let us reason together." The divine-courtroom imagery, YHWH inviting His covenant-people to reason with Him in court, shifts from condemnation to grace. The verses that follow (19-20) make the invitation conditional: willingness-and-obedience → blessing; refusal-and-rebellion → destruction. The verse holds together divine grace (the offer of forgiveness) and human responsibility (the conditional response).

Theological reading

Isaiah 1:18 is one of the most cited evangelistic-anchor verses in the OT, and a foundational text for the Christian doctrine of divine forgiveness as gracious-invitation rather than mere-leniency. The verse compresses three theologically loaded claims: (a) YHWH initiates reconciliation by inviting, "Come now, and let us reason together"; (b) the depth of sin (scarlet, crimson, the colors of blood, of indelible stain) is matched by the depth of forgiveness (white as snow, as wool, the colors of pure cleanness); (c) the transformation is the work of YHWH's promise, not human achievement.

The "let us reason together", nivvakh

The Hebrew lekhu-na vehivvakhachah, "Come, I pray you, and let us reason / dispute / decide", uses the verb yakhakh (יכח) in the niphal / reciprocal stem. Yakhakh is a juridical / forensic term meaning "to argue a case, decide in court, settle a dispute, render a verdict." The verse is not casual conversation; it is courtroom-language between the offended party (YHWH) and the defendants (Israel).

The remarkable feature: YHWH, the offended party, initiates the courtroom dialogue. In ANE courtroom convention, the offended seeks justice / vengeance / vindication. Here YHWH seeks reconciliation, His "reasoning together" is offered in the spirit of settling the dispute by His grace. The divine pattern of taking-the-initiative-toward-the-offending-party becomes the foundational pattern of biblical grace.

Scarlet → snow / crimson → wool

The color-pair imagery has multiple layers:

Scarlet (Hebrew shanim) and crimson (tola) were the deepest, most colorfast dyes in the ancient world. Once dyed, fabric stayed dyed; the stain was permanent. Scarlet and crimson sins = sins so deep they cannot be washed out by human effort. The colors also evoke blood, the blood-guilt that v. 15 mentions ("your hands are full of blood").
Snow and wool are the natural pure-white substances of ANE life, snow on the high places, wool on the sheep. The contrast: the unwashable indelible stain transformed into pristine whiteness.

The transformation is impossible for humans to accomplish but trivial for YHWH. The verse anticipates Psalm 51:7, "wash me, and I shall be whiter than snow", and the NT fulfillment of full forgiveness through Christ's blood (1 John 1:7-9, "the blood of Jesus Christ his Son cleanseth us from all sin"; Hebrews 9:14).

The conditional structure (vv. 19-20)

The promise of cleansing comes paired with a conditional: "If ye be willing and obedient, ye shall eat the good of the land; but if ye refuse and rebel, ye shall be devoured with the sword." The forgiveness offered in v. 18 is available but conditional on response.

This pattern, universal-offer conditioned on response, is consistent with the biblical pattern throughout. The NT inherits exactly this structure: gospel offered universally, conditioned on faith-and-repentance, with eternal consequences for refusal.

Patristic and Reformed reading

John Chrysostom (Homilies on Isaiah, c. AD 380): the verse is the OT's clearest evangelistic invitation. YHWH does not abandon His covenant-people in their sin; He invites them back into reconciliation. The pattern of divine initiative + human response prepares for the gospel pattern.

Augustine (Confessions + various homilies): the verse exemplifies prevenient grace, God's initiative-toward-the-sinner that precedes the sinner's response. "Thou hast made us for thyself, and our hearts are restless until they rest in thee", Augustine's most famous line, reflects exactly this divine-initiative-pattern.

John Calvin (Commentary on Isaiah ad Isa 1:18): the verse establishes that God's gracious-pardon is available to all who turn from sin, "the prophet here introduces God as inviting wicked men to come to a friendly conference." Calvin emphasizes both the depth-of-sin and the depth-of-pardon.

Apologetic and evangelistic deployment

The verse is foundational for:

Evangelistic appeal. The verse is one of the principal "closing-conversation" anchors for evangelistic conversation (cf. Closing Conversations). After the soul's recognition of sin (whether by the diagnostic-doorway approach or by direct preaching), the invitation of Isaiah 1:18 frames the offer: however deep your sin, the forgiveness is deeper.
Defense against the "I'm too far gone" objection. A common pastoral / evangelistic resistance: "my sins are too great; God couldn't forgive me." Counter: Isaiah 1:18 specifically addresses scarlet / crimson sins, the worst the OT vocabulary can describe. The deeper-stain → deeper-pardon contrast makes the offer specifically for the worst sinners.
Defense against the "Christianity is anti-intellectual" objection. The verse explicitly invites reasoning together. Christianity does not demand blind submission; God invites engagement, dialogue, working-through-the-issues. The faith is intellectually serious; the offer is rationally apprehensible.
Defense against the "God doesn't care about justice" objection. The verses come in the context of God's strong moral demands (vv. 16-17, justice, care for the oppressed). The forgiveness is not leniency-at-the-expense-of-justice; it is forgiveness alongside the moral demands. The NT extension: the cross is exactly where justice and mercy meet (cf. Romans 3:24-26, Christ as propitiation that He might be just and the justifier).

The NT-fulfillment trajectory

The verse anticipates the NT fulfillment:

The blood-stain that needs cleansing → the blood of Christ that actually cleanses (1 John 1:7-9; Heb 9:14; 1 Pet 1:18-19)
The divine invitation → the gospel call (cf. "Come unto me, all ye that labour and are heavy laden", Matt 11:28)
The conditional response → the gospel-faith-and-repentance condition

The Christian apologetic argument: the OT pattern of divine invitation reaches its supreme expression at the cross, where the depth-of-sin meets the depth-of-divine-self-giving-love.

Pastoral application

The verse has been one of the church's most pastorally-deployed verses across centuries, read at altar calls, used in counseling for those weighed down by guilt, cited in hymns ("Are you weary, are you heavy-hearted?"; "Whiter than snow, yes, whiter than snow"; etc.). The pastoral power comes from the paradoxical mathematics of the verse: the larger the sin, the larger the forgiveness; the deeper the stain, the more thorough the cleansing.

Canonical-theological connections

Psalm 51, David's penitential psalm: "wash me, and I shall be whiter than snow" (v. 7)
Psalm 103:8-14, "as far as the east is from the west, so far hath he removed our transgressions from us"
Isaiah 43:25, "I, even I, am he that blotteth out thy transgressions for mine own sake"
Jeremiah 31:34, new covenant: "I will forgive their iniquity, and I will remember their sin no more"
Ezekiel 36:25-27, "Then will I sprinkle clean water upon you, and ye shall be clean"
Matthew 11:28, "Come unto me, all ye that labour and are heavy laden"
John 8:11, "go, and sin no more"
1 John 1:7-9, "the blood of Jesus Christ his Son cleanseth us from all sin"
Hebrews 9:14, "how much more shall the blood of Christ... purge your conscience"
Revelation 7:14, "washed their robes, and made them white in the blood of the Lamb"

Key words

H3068 - YHWH, YHWH (Strong's H3068). Also appears in: Genesis 2.4, Genesis 2.7, Genesis 2.16-17.