Lexicon

H3724 - kopher

Strong's: H3724 · BLB lookup Pronunciation: ko'-fer (with long ō) Part of speech: masculine noun OT occurrences: ~17 (one of the more concentrated atonement-vocabulary terms) Greek equivalent (LXX): G3083 - lytron (λύτρον, "ransom"); occasionally allagma (an exchange-price); the LXX consistency on kopher → lytron is theologically load-bearing because the NT uses lytron / antilytron / apolytrōsis in the Christological-ransom material Verbal root: H3722 - kaphar (to cover / atone), kopher is the price at which the kaphar-action is accomplished

Semantic range

Substitutionary ransom-price for a life, the dominant theological-cultic sense (Exod 21:30; Num 35:31-32; Ps 49:7-9; Job 33:24)
Atonement-price / atonement-money, the half-shekel paid at the census so that no plague befalls the people (Exod 30:11-16)
Bribe, a corruption-sense; a payment to subvert justice (1 Sam 12:3; Amos 5:12; Prov 6:35)
Asphalt / pitch (homograph; Gen 6:14, Noah's ark kopher lining), same Semitic root in the covering sense; the ark is covered with pitch to cover it against the flood. The homography is theologically suggestive: the pitch-kopher preserves Noah; the ransom-kopher preserves the substitutionary-sinner. Most lexicographers treat them as historically-distinct homographs, but the kaphar-root semantic of covering unites them at the etymological level.

The dominant theological-apologetic use is sense 1 (substitutionary ransom-price); the other senses are background context.

Theological force, substitutionary ransom-price

Kopher is the central OT noun for the cost-of-atonement, the price paid to deliver a life from forfeiture. The cognate verb H3722 - kaphar (to cover / atone) describes the action; kopher is the price the action requires. The two together formalize the OT's substitutionary-atonement structure: a debt is owed (typically a life); the debtor cannot pay; a kopher is provided that substitutes for the forfeit life.

The Pentateuchal legal texts

The Torah's kopher legislation establishes the principle and its limits:

Exodus 21:30, "If a ransom (kopher) is demanded of him, then he shall give for the redemption of his life whatever is demanded of him." The classic civil case: an ox-owner whose ox kills a person can pay a kopher in lieu of the death penalty if the victim's family permits. The text presupposes that life-for-life is the default; kopher is the merciful substitution.
Exodus 30:11-16, the census kopher of one-half shekel: "Each one of them shall give a ransom for himself to the LORD, when you number them, so that there will be no plague among them when you number them." The census itself creates atonement-vulnerability (numbering as appropriation; cf. David's census in 2 Sam 24); the kopher is the apotropaic-substitution that wards off the plague. The half-shekel is equal across rich and poor (v. 15), kopher is not meritocratic.
Numbers 35:31-32, "Moreover, you shall not take ransom (kopher) for the life of a murderer who is guilty of death, but he shall surely be put to death... You shall not take ransom (kopher) for him who has fled to his city of refuge." The limit of kopher: first-degree murder admits NO ransom. This is the OT's strongest claim about the limits of substitutionary payment, some crimes are too grave for kopher to cover. The limit is itself theologically generative: it sets up the NT problem of how a kopher COULD be provided for the universal-sin condition.

Job 33:24, God finds a kopher

In the Elihu speech: "Then let him be gracious to him, and say, 'Deliver him from going down to the pit, I have found a ransom (kopher), let his flesh become fresher than in youth, let him return to the days of his youthful vigor.'" The text is one of the OT's clearest positive statements: God HIMSELF can find / provide a kopher that delivers from the pit. Christian theological reception reads this prophetically: God does provide a kopher in Christ (Mark 10:45, the Son of Man came to give His life lytron / ransom for many).

Psalm 49:7-9, no man can give a kopher

The wisdom-paradox: "No man can by any means redeem his brother or give to God a ransom (kopher) for him, for the redemption of his soul is costly, and he should cease trying forever, that he should live on eternally, that he should not undergo decay." (NASB95). The Hebrew construction in v. 7, lōʾ-pādōh yipdeh (infinitive-absolute + finite verb of padah), is the strongest negation in biblical Hebrew, often translated "absolutely cannot redeem."

The psalm formalizes the impossibility-of-human-paid-kopher for eternal-life: human resources, however vast, cannot supply the price. The verse pair sets up the eschatological-Christological question: who CAN pay the kopher? Psalm 49:15 answers (provisionally): "But God will redeem my soul from the power of Sheol, for He will receive me." The NT answers definitively in Mark 10:45 / 1 Tim 2:5-6 / 1 Pet 1:18-19 / Heb 9:12.

See Psalms 49.7-9 (rich-hub passage) for the full exegetical treatment.

Isaiah 43:3, nations as kopher

"For I am the LORD your God, the Holy One of Israel, your Savior; I have given Egypt as your ransom (kopher), Cush and Seba in your place." God speaks of giving whole nations as the kopher paid for Israel's deliverance, a striking inversion of the Exod-30 census-kopher (where each Israelite pays a half-shekel kopher). Here YHWH Himself supplies the kopher from the nations. The text develops the cost-of-redemption-borne-by-God motif that culminates in the Servant Songs (Isa 52:13-53:12) where the Servant bears the iniquities of many as the eschatological kopher.

The bribe-sense (corruption usages)

The corruption-sense (kopher as bribe) appears in:

1 Samuel 12:3, Samuel's farewell: "Whose ox have I taken, or whose donkey have I taken, or whom have I defrauded? Whom have I oppressed, or from whose hand have I taken a bribe (kopher) to blind my eyes with it?"
Amos 5:12, "For I know your transgressions are many and your sins are great, you who distress the righteous and accept bribes (kopher), and turn aside the poor in the gate."
Proverbs 6:35, the jealous husband: "He will not accept any ransom (kopher), nor will he be satisfied though you give many gifts."
Proverbs 13:8, "The ransom (kopher) of a man's life is his wealth."
Proverbs 21:18, "The wicked is a ransom (kopher) for the righteous; and the treacherous in the place of the upright."

The bribe-corruption-sense is theologically illuminating by contrast: God cannot be bribed (Deut 10:17, YHWH does not take a bribe); therefore the kopher of human salvation cannot be purchased by us, and the legitimate-kopher must be provided by God Himself. This is the OT-theological setup for the NT Christological resolution.

Connection to the wider atonement vocabulary

Kopher is one node in a multi-term Hebrew atonement-vocabulary network:

Lexeme	Strong's	Function
H3722 - kaphar	H3722	The verb of atonement-action (to cover / atone / make atonement)
kopher	H3724	The noun for the price the action requires
kippur	H3725	The result-noun (atonement; Yom Kippur)
kapporet	H3727	The mercy seat (locus of atonement), see G2435 - hilasterion
H1350 - goel	H1350	The kinsman-redeemer who pays (relational-redeemer category)
padah (H6299)	H6299	Verb: to redeem / ransom out (often paired with kopher)
geulah (H1353)	H1353	Noun: the act of redemption (from goel-action)
pidyon (H6306)	H6306	Noun: ransom-price (alongside kopher)
H3467 - yasha	H3467	Verb: to save / deliver (broader salvation-vocabulary)

The cluster's internal logic: a sinner / forfeit-life is covered (kaphar-verb) by a price (kopher-noun); the day the covering is enacted is kippur; the place the covering is enacted is kapporet; the kinsman who pays is the goel; the act of paying is the padah-verb / geulah-noun; the broader deliverance-result is yasha-verb. The OT supplies a rich-vocabulary atonement field, not a single word but a coordinated grammar of substitutionary cost.

NT reception, kopher → lytron → Christ

The LXX renders kopher as lytron (λύτρον, see G3083 - lytron) with high consistency. The NT picks up lytron in the Christological-ransom material:

Mark 10:45 (and parallel Matt 20:28): "For even the Son of Man did not come to be served, but to serve, and to give His life a ransom (lytron) for many.", Jesus's own self-description. The lytron-for-many construction is the NT's strongest single-verse claim that Christ's death is the substitutionary-ransom-price the OT's kopher-tradition awaited.
1 Timothy 2:5-6, "For there is one God, and one mediator also between God and men, the man Christ Jesus, who gave Himself as a ransom (antilytron) for all, the testimony given at the proper time." The compound antilytron (G0487, NT hapax) intensifies: anti- (in-place-of) + lytron, the substitution-in-place-of construction made grammatically explicit. See 1 Timothy 2.5.
1 Peter 1:18-19, "knowing that you were not redeemed with perishable things like silver or gold from your futile way of life inherited from your forefathers, but with precious blood, as of a lamb unblemished and spotless, the blood of Christ.", The not-perishable-kopher (silver, gold) vs. the Christ-blood-kopher contrast.
Hebrews 9:12, "and not through the blood of goats and calves, but through His own blood, He entered the holy place once for all, having obtained eternal redemption (lytrōsis)."
Revelation 5:9, "You are worthy to take the book and to break its seals; for You were slain, and purchased (agorazō) for God with Your blood men from every tribe and tongue and people and nation.", purchase / agora-acquisition is a Greek-LXX variant of the redemption-cost field.

The Pauline apolytrōsis family (G0629 - apolytrosis) develops the same line: apolytrōsis in Rom 3:24, 1 Cor 1:30, Eph 1:7, 14, Col 1:14, redemption-through-Christ's-blood as the kopher-fulfillment.

Apologetic load

Solves the universalism-objection ("how can one man's death pay the cost for all humanity?"). The kopher-tradition's quality-not-quantity logic, a single half-shekel suffices for one Israelite at the census; God Himself provides a kopher of unbounded value in Christ (Heb 9:12 eternal redemption), explains how the Christological ransom can be both finite (a single death) and unbounded (covering all who believe).
Solves the "no atonement was needed" objection (Pelagian / Socinian / Unitarian). The Num 35:31-32 no-kopher-for-murder legislation establishes that some crimes require death, not ransom. Applied to universal sin (Rom 3:23), the OT itself sets up the problem: no normal human-paid kopher avails. The Christological resolution is the only-effective-kopher-claim.
Engages the Tahrif objection (Islamic charge that Christians corrupted scripture; cf. Tahrif). The kopher-tradition is pre-Christian Hebrew Bible material, uncontroversial in the Hebrew text, the LXX, the Targums, and the rabbinic tradition. The NT's application to Christ is interpretive, but the cost-of-redemption-borne-by-God trajectory is internal to the OT (Isa 43:3; 53; Job 33:24), not imposed retroactively.
Engages the Jewish counter-missionary line on atonement (Tovia Singer's reading: Yom Kippur is achieved by repentance, not blood; no need for Christ). The OT itself ties kaphar to kopher (the action requires a price); Leviticus is overwhelmingly blood-substitution-soteriology (Lev 17:11, for the life of the flesh is in the blood, and I have given it to you on the altar to make atonement for your souls; for it is the blood by reason of the life that makes atonement). The "repentance-alone" Yom Kippur reading is post-70-AD necessity (no Temple = no sacrifice possible) reinterpreted into theological-principle; the OT itself does not teach blood-less atonement.
Grounds the Costly-Signal Convergence argument's OT-side (cf. Argument from the Costly-Signal Convergence). The kopher-tradition is the OT-formal vocabulary in which truthful-self-revelation-as-self-cost operates. The Christological kenosis pattern (Phil 2:6-11) is the NT-side instantiation; the OT-side instantiation is the kopher-as-required-cost tradition. The two together formalize the cost-of-truth pattern across the canon. The convergence-argument's biological-side (Zahavi handicap principle) instantiates the same formal law at the creaturely-signaling level.

Notable verses

Outside the codex's verse-hub corpus (worth knowing but no stubs yet)

Genesis 6:14, Noah's ark kopher lining (the covering / pitch homograph)
Exodus 21:30, civil-case kopher paid by ox-owner
Exodus 30:11-16, the census half-shekel kopher
Numbers 35:31-32, no kopher for murder (the OT's strongest limits-of-substitution legislation)
1 Samuel 12:3, Samuel's denial of taking kopher (bribe)
Job 33:24, God finds a kopher
Proverbs 6:35; 13:8; 21:18, kopher in wisdom-corruption contexts
Amos 5:12, kopher as judicial bribe
Isaiah 43:3, nations as kopher for Israel

In the codex's verse-hub corpus

Psalms 49.7-9, "no man can by any means redeem his brother or give to God a ransom (kopher) for him", already a rich-hub passage; kopher + padah construction
1 Timothy 2.5, antilytron / one-mediator anchor; resolves the Ps 49 kopher-impossibility
1 Peter 1:18-19 (referenced, passage stub status: check)
Hebrews 9:12 (referenced, passage stub status: check)

Patristic note

The Christian Name-tradition develops along three lines:

Origen (Commentary on Matthew 16.8, c. 246), develops the ransom-to-Satan atonement-theory using lytron-vocabulary: Christ's death pays a kopher-equivalent ransom to Satan. The theory was widespread in patristic and early-medieval theology (Gregory of Nyssa, Augustine in some moods, Christus Victor tradition).
Anselm (Cur Deus Homo 1098), explicitly rejects the ransom-to-Satan theory and develops the satisfaction theory: the kopher is paid to God's offended honor, not to Satan. The infinite-debt problem requires an infinite-payer; only the God-man (Deus-Homo) can supply the kopher. See Argument from the Costly-Signal Convergence §Anselmian formalization.
Reformation, Luther, Calvin, Reformed-confessional tradition develop the penal-substitution refinement: the kopher paid is the penalty for sin the elect would otherwise bear; the substitution is forensic-juridical (against the medieval-merit-economy reading). The codex's full atonement-theory treatment is at Atonement Theory Spread.

Modern engagement

Leon Morris The Apostolic Preaching of the Cross (Tyndale 1955; rev. 1965), the foundational modern-evangelical defense of the ransom-cost reading against R. C. Moberly's vicarious-penitence alternative. Morris establishes the linguistic-philological case that lytron (and behind it kopher) genuinely means substitutionary ransom-price.
John Stott The Cross of Christ (IVP 1986), popular-academic anchor of the satisfaction-substitution synthesis; Ch. 6 ("The Self-Substitution of God") works the kopher-pattern across the canon.
D. A. Carson ed. The Glory of the Atonement (IVP 2004), multi-author treatment; engages the New-Perspective-on-Paul re-reading of atonement vocabulary.
Garry Williams "Penal Substitutionary Atonement in the Church Fathers" EQ 83 (2011): 195-216, patristic precedent for the substitution reading.
Stephen Finlan The Background and Content of Paul's Cultic Atonement Metaphors (Brill 2004), academic treatment of the OT-cultic background of NT-atonement vocabulary; engages the kopher-lytron pathway in detail.