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Word Studies

Hebrew KPR Root Family

kaphar (H3722) -- The Core Verb

Original: כָּפַר Transliteration: kaphar (kaw-far') Part of Speech: Verb BLB Count: 102 occurrences Definition: A primitive root; to cover (specifically with bitumen); figuratively, to expiate or condone, to placate or cancel.

Stem Distribution

  • Qal stem (simple active): Used for LITERAL covering -- Genesis 6:14 ("pitch it... with pitch"). Also Genesis 32:20 ("I will appease").
  • Piel stem (intensive): ALL cultic/ritual uses. Every instance of "make atonement" is Piel. The intensification suggests the ritual action is a thorough, complete covering/purging.
  • Pual stem (intensive passive): "be atoned for, be purged" -- Isaiah 6:7; 22:14; 28:18.
  • Hithpael stem: Not attested for kaphar.
  • Niphal stem: Not attested for kaphar.

Key Translations in KJV (51 unique translation phrases)

Category Translation Count Example
Atonement "make an atonement" (various forms) ~80 LEV 16:6,10,11,16,17,18,24,27,30,33,34
Reconciliation "reconcile/reconciling" ~5 LEV 16:20; EZK 45:15; DAN 9:24
Purging "be purged/purge away" ~6 ISA 6:7; 22:14; 27:9; PRO 16:6; EZK 43:20,26
Forgiveness "forgive/forgave/pardon" ~4 JER 18:23; PSA 78:38; 2CH 30:18; DEU 21:8
Mercy "be merciful" ~2 DEU 21:8; 32:43
Pacification "appease/pacify" ~2 GEN 32:20; PRO 16:14
Covering "pitch" 1 GEN 6:14
Nullification "disannulled" 1 ISA 28:18
Removal "put off" 1 ISA 47:11

Semantic Range Progression

  1. Literal covering: GEN 6:14 -- physical pitch/bitumen (Qal)
  2. Interpersonal appeasement: GEN 32:20 -- covering someone's face/anger with a gift (Piel)
  3. Wisdom/pacification: PRO 16:14 -- wisdom "covers" wrath; PRO 16:6 -- mercy and truth "purge" iniquity
  4. Cultic atonement: LEV 16 (16x), LEV 17:11, etc. -- ritual covering/purging of sin through blood (Piel)
  5. Divine forgiveness: PSA 78:38; 79:9; DEU 32:43 -- God's own act of covering/forgiving
  6. Prophetic/eschatological: DAN 9:24 -- "to make reconciliation for iniquity" (messianic fulfillment)

LXX Translation Mapping

Greek LXX Word PMI Count Significance
G2433 hilaskomai 6.47 4 Direct verb-to-verb: "atone" -> "propitiate"
G863 aphiemi 5.55 14 "Release, forgive" -- forgiveness dimension
G2511 katharizo 5.18 14 "Cleanse, purify" -- purging dimension
G4012 peri 5.20 62 Preposition "concerning" (contextual)
G266 hamartia 4.77 41 "Sin" (contextual association)

The LXX translators understood kaphar as BOTH propitiation (hilaskomai) AND cleansing (katharizo) AND forgiveness (aphiemi) -- all three dimensions.


kippur (H3725) -- The Noun "Expiation/Atonement"

Original: כִּפֻּר (always plural: kippurim) Transliteration: kippur (kip-poor') Part of Speech: Masculine noun (plural only) BLB Count: 8 occurrences Definition: From H3722; expiation (only in plural): atonement.

All Occurrences

Verse Context
EXO 29:36 "a bullock for a sin offering for atonement" (consecration of altar)
EXO 30:10 "blood of the sin offering of atonements" (annual altar purification)
EXO 30:16 "the atonement money" (census ransom)
LEV 23:27 "the day of atonement" (Yom Kippur calendar entry)
LEV 23:28 "it is a day of atonement" (definition)
LEV 25:9 "the day of atonement" (Jubilee trumpet)
NUM 5:8 "atonement is made for him" (trespass offering)
NUM 29:11 "sin offering of atonement" (DOA supplementary offerings)

Key observation: Kippur names the INSTITUTION of atonement. "Yom Kippur" = "Day of Atonement(s)" -- the plural may indicate the multiple acts of atonement performed on that day.


kapporeth (H3727) -- The Mercy Seat / "Covering"

Original: כַּפֹּרֶת Transliteration: kapporeth (kap-po'-reth) Part of Speech: Feminine noun BLB Count: 27 occurrences Definition: From H3722; a lid (used only of the cover of the sacred Ark): mercy seat.

All Occurrences (27)

All refer to the lid of the Ark of the Covenant: - Exodus 25:17,18,19,20,21,22 (instructions) - Exodus 26:34; 30:6; 31:7; 35:12; 37:6,7,8,9; 39:35; 40:20 (construction/placement) - Leviticus 16:2,13,14,15 (Day of Atonement ritual) - Numbers 7:89 (God speaks from above it) - 1 Chronicles 28:11(x2) (Solomon's temple)

LXX Translation: hilasterion

Greek PMI Count Note
G2435 hilasterion 9.75 16 THE bridge word: kapporeth -> hilasterion in EVERY LXX occurrence

This is the strongest PMI score in the entire mapping. The LXX translators CONSISTENTLY rendered kapporeth as hilasterion. When Paul calls Christ a "hilasterion" in ROM 3:25, every Greek-speaking reader who knew the LXX would hear "mercy seat."

Theological Significance

The kapporeth is the PLACE where: 1. God's presence dwells (EXO 25:22 -- "I will meet with thee") 2. God speaks (NUM 7:89 -- "he heard the voice... from off the mercy seat") 3. Blood is applied (LEV 16:14-15 -- sprinkled on and before the mercy seat) 4. Atonement is located -- the NAME itself (from kaphar) means "the covering place"


kopher (H3724) -- The Ransom/Cover-Price

Original: כֹּפֶר Transliteration: kopher (ko'-fer) Part of Speech: Masculine noun BLB Count: 17 occurrences Definition: From H3722; properly, a cover, i.e. (literally) a village (as covered in); (specifically) bitumen (as used for coating), and the henna plant (as used for dyeing); figuratively, a redemption-price.

Key Verses by Semantic Category

Literal covering/pitch: - GEN 6:14 -- "pitch it within and without with pitch [kopher]"

Ransom/redemption price: - EXO 21:30 -- "the ransom [kopher] of his life" (payment for accidental death) - EXO 30:12 -- "a ransom [kopher] for his soul unto the LORD" (census money) - NUM 35:31 -- "no satisfaction [kopher] for the life of a murderer" (NO ransom allowed for murder) - NUM 35:32 -- "no satisfaction [kopher] for him that is fled" (no ransom for refuge violators) - JOB 33:24 -- "I have found a ransom [kopher]" (God provides deliverance) - JOB 36:18 -- "a great ransom [kopher] cannot deliver thee" - PSA 49:7-8 -- "nor give to God a ransom [kopher] for him" (no human can pay) - ISA 43:3 -- "I gave Egypt [for] thy ransom [kopher]" (GOD provides the price)

Bribe/payment (negative): - PRO 6:35 -- "He will not regard any ransom [kopher]" (jealousy cannot be appeased) - AMO 5:12 -- "they take a bribe [kopher]" (corruption) - 1SA 12:3 -- Samuel declares he took no bribe [kopher]

Henna plant: - SOS 1:14; 4:13 -- "camphire" (henna, a covering/coating plant)

Substitution: - PRO 21:18 -- "The wicked [shall be] a ransom [kopher] for the righteous"

LXX Translation

  • G3083 lytron: PMI 8.83, count 6 -- THE key bridge: kopher -> lytron (ransom price)

This LXX connection establishes the direct line: OT kopher = NT lytron. When Jesus says "give his life a lytron for many" (MAT 20:28), He uses the exact Greek equivalent of the OT kopher.


Parallel Hebrew Term

kasah (H3680) -- "To Cover"

Original: כָּסָה Transliteration: kasah (kaw-saw') Part of Speech: Verb BLB Count: 152 occurrences Definition: A primitive root; properly, to plump, i.e. fill up hollows; by implication, to cover (for clothing or secrecy).

Comparison with kaphar

Feature kaphar (H3722) kasah (H3680)
Root meaning Cover/coat Cover/conceal
Primary domain Ritual/theological Physical/general
Covers what? Sin, guilt, wrath Objects, bodies, nakedness
Key stem Piel (intensive) Qal and Piel
LXX rendering hilaskomai (propitiate) kalypto (veil/cover)
Result Atonement, forgiveness Concealment, protection

Notable shared context: LEV 16:13 -- kasah (Piel) describes incense cloud COVERING the mercy seat, while kaphar describes the blood ritual on the same furniture. Two "coverings" in one ceremony.

PSA 32:1 -- "Blessed is he whose transgression is forgiven, whose sin is COVERED [kasah]" -- parallel to kaphar's theological effect.


Greek Atonement Vocabulary

hilasterion (G2435) -- "Mercy Seat / Propitiation"

Original: ἱλαστήριον Transliteration: hilasterion (hil-as-tay'-ree-on) Part of Speech: Neuter noun (from hilaskomai) NT Occurrences: 2

Both NT Occurrences Parsed

Verse Greek Form Parsing Translation Context
ROM 3:25 ἱλαστήριον Acc Sg N (anarthrous) "propitiation" Christ AS hilasterion -- God set him forth
HEB 9:5 τὸ ἱλαστήριον Acc Sg N (articular) "mercyseat" Physical furniture of the tabernacle

Key grammatical distinction: In HEB 9:5, hilasterion has the article (to) -- the specific, known mercy seat. In ROM 3:25, it is anarthrous (no article) -- Christ is presented in the CHARACTER/QUALITY of a hilasterion, not identified with the physical object.

Hebrew source: H3727 kapporeth (PMI 9.75) -- virtually 1:1 mapping in the LXX.


hilaskomai (G2433) -- "To Propitiate / Be Merciful"

Original: ἱλάσκομαι Transliteration: hilaskomai (hil-as'-kom-ahee) Part of Speech: Verb (middle/passive deponent) NT Occurrences: 2

Both NT Occurrences Parsed

Verse Greek Form Parsing Translation
LUK 18:13 ἱλάσθητί Aor Pass Imperative 2S "be merciful" (lit: "be propitiated!")
HEB 2:17 ἱλάσκεσθαι Pres Pass Infinitive "make reconciliation for" (purpose of Christ's priesthood)

Hebrew source: H3722 kaphar (PMI 6.47) + H5545 salach (PMI 8.10 -- forgive/pardon)

Key insight: In LUK 18:13, the aorist passive imperative ("be propitiated!") presupposes the sacrificial system: the publican asks God to accept the propitiation already provided at the temple. In HEB 2:17, the present infinitive describes the ongoing priestly function of Christ.


hilasmos (G2434) -- "Propitiation" (Noun)

Original: ἱλασμός Transliteration: hilasmos (hil-as-mos') Part of Speech: Masculine noun NT Occurrences: 2

Both NT Occurrences Parsed

Verse Greek Form Parsing Translation
1JN 2:2 ἱλασμός Nom Sg M (predicate) "propitiation" -- "he IS the propitiation"
1JN 4:10 ἱλασμὸν Acc Sg M "propitiation" -- God sent his Son [as] propitiation

Key theological data: - In 1JN 2:2: Christ IS (estin, present tense) the hilasmos -- ongoing, current reality. Scope: "not for ours only, but also for the whole world." - In 1JN 4:10: God is the SUBJECT who loved (aorist: decisive act) and sent (aorist) His Son as hilasmos. Propitiation originates in God's love, not in human effort to appease God.


katallage (G2643) -- "Reconciliation/Exchange"

Original: καταλλαγή Transliteration: katallage (kat-al-lag-ay') Part of Speech: Feminine noun BLB Count: 4 (NT) Definition: From G2644 (katallasso); exchange (figuratively, adjustment), i.e. restoration to favor.

All 4 NT Occurrences

Verse Greek Form Translation Context
ROM 5:11 τὴν καταλλαγὴν "atonement" The ONLY use of "atonement" in KJV NT. "We received the katallage."
ROM 11:15 ἡ καταλλαγὴ "the reconciling" "The reconciling of the world" (Israel's rejection -> Gentile inclusion)
2CO 5:18 τῆς καταλλαγῆς "of reconciliation" "The ministry of reconciliation"
2CO 5:19 τῆς καταλλαγῆς "of reconciliation" "The word of reconciliation"

Key insight: Katallage means "exchange" -- a mutual restoration to favor. The Hebrew kaphar focuses on what happens to SIN (covering/purging). The Greek katallage focuses on what happens to the RELATIONSHIP (exchange of enmity for peace). Same event, different angle.

Related verb: G2644 katallasso -- see below.


katallasso (G2644) -- "To Reconcile/Exchange"

Original: καταλλάσσω Transliteration: katallasso (kat-al-las'-so) Part of Speech: Verb BLB Count: 6 Definition: From kata and allasso; to change mutually, i.e. (figuratively) to compound a difference, reconcile.

All 6 NT Occurrences

Verse Form Translation Context
ROM 5:10a κατηλλάγημεν "we were reconciled" "when we were enemies, we were reconciled to God by the death of his Son"
ROM 5:10b καταλλαγέντες "being reconciled" "much more, being reconciled, we shall be saved by his life"
1CO 7:11 καταλλαγήτω "be reconciled to" "let her be reconciled to her husband" (marital context)
2CO 5:18 καταλλάξαντος "hath reconciled" "God... hath reconciled us to himself by Jesus Christ"
2CO 5:19 καταλλάσσων "reconciling" "God was in Christ reconciling the world unto himself"
2CO 5:20 καταλλάγητε "be ye reconciled" "we pray you in Christ's stead, be ye reconciled to God"

Key observation: In every theological use, GOD is the agent/initiator of reconciliation. Humans are the recipients. The only human-initiated instance is marital reconciliation (1CO 7:11).


apokatallasso (G604) -- "To Fully Reconcile"

Original: ἀποκαταλλάσσω Transliteration: apokatallasso (ap-ok-at-al-las'-so) Part of Speech: Verb NT Occurrences: 3

All 3 NT Occurrences Parsed

Verse Form Parsing Context
EPH 2:16 ἀποκαταλλάξῃ Aor Act Subj 3S "reconcile both [Jew+Gentile] unto God in one body by the cross"
COL 1:20 ἀποκαταλλάξαι Aor Act Inf "reconcile all things unto himself... through the blood of his cross"
COL 1:21 [implied from context] -- "you... hath he reconciled in the body of his flesh through death"

The apo- prefix intensifies: kata + allasso = "change down/fully"; apo + kata + allasso = "change away from [enmity], down to [peace], fully." The triple-compound verb expresses COMPLETE, THOROUGH reconciliation.

Scope: EPH 2:16 -- horizontal (Jew + Gentile -> one body); COL 1:20 -- cosmic (all things in earth and heaven).


lytron (G3083) -- "Ransom Price"

Original: λύτρον Transliteration: lytron (loo'-tron) Part of Speech: Neuter noun NT Occurrences: 2 Definition: From G3089 (lyo, "to loose"); something to loosen with, i.e. a redemption price.

Both NT Occurrences Parsed

Verse Context Key Preposition
MAT 20:28 "give his life a ransom [lytron] FOR many" anti (G473) -- "in place of" = SUBSTITUTION
MRK 10:45 "give his life a ransom [lytron] FOR many" anti (G473) -- "in place of" = SUBSTITUTION

Hebrew source: H3724 kopher (via LXX, PMI 8.83). Direct line: kopher (OT ransom price) -> lytron (NT ransom price).

Critical: anti pollon ("instead of many") -- the preposition anti means "in the place of, as a substitute for." This is explicit substitutionary language from Jesus Himself.


antilytron (G487) -- "Substitutionary Ransom"

Original: ἀντίλυτρον Transliteration: antilytron (an-til'-oo-tron) Part of Speech: Neuter noun NT Occurrences: 1 Definition: From G473 (anti) and G3083 (lytron); a redemption-price, a corresponding ransom.

The Single NT Occurrence

Verse Greek Parsing Context
1TI 2:6 ἀντίλυτρον Acc Sg N "Who gave himself a ransom [antilytron] FOR [hyper] all"

Key: anti- prefix = "corresponding to, in place of." The word itself EMBEDS substitution in its morphology. Christ is the "corresponding-ransom" -- the one whose value corresponds to what is owed. Combined with hyper ("on behalf of") panton ("all"), the full theological statement is: a substitute-ransom on behalf of all.


apolytrosis (G629) -- "Redemption in Full"

Original: ἀπολύτρωσις Transliteration: apolytrosis (ap-ol-oo'-tro-sis) Part of Speech: Feminine noun NT Occurrences: 10 Definition: From compound of G575 (apo) and G3083 (lytron); ransom in full, i.e. (figuratively) riddance, or (specially) Christian salvation.

All 10 NT Occurrences

Verse Translation Context
LUK 21:28 "redemption" Eschatological: "your redemption draweth nigh"
ROM 3:24 "redemption" "the redemption that is in Christ Jesus" (with hilasterion in v.25)
ROM 8:23 "redemption" "the redemption of our body" (future, eschatological)
1CO 1:30 "redemption" Christ "is made unto us... redemption"
EPH 1:7 "redemption" "redemption through his blood, the forgiveness of sins"
EPH 1:14 "of redemption" "the redemption of the purchased possession"
EPH 4:30 "of redemption" "sealed unto the day of redemption"
COL 1:14 "redemption" "redemption through his blood, even the forgiveness of sins"
HEB 9:15 "the redemption" "redemption of the transgressions under the first testament"
HEB 11:35 "deliverance" Martyrs "not accepting deliverance" (different context)

Key: apo- (from/away) + lytrosis (ransoming) = "ransoming away from" = complete liberation through ransom payment. The apo- prefix indicates COMPLETION: the ransom is paid IN FULL and the captive is freed.

Relationship to hilasterion: ROM 3:24-25 uses BOTH apolytrosis (v.24) and hilasterion (v.25) in the same sentence: "justified freely by his grace through the REDEMPTION [apolytrosis] that is in Christ Jesus: whom God hath set forth a PROPITIATION [hilasterion]." Redemption and propitiation are two aspects of the same act.


Summary: The Three Dimensions of Atonement Vocabulary

Dimension 1: COVERING (what happens to sin)

  • H3722 kaphar (Qal) = literal covering (GEN 6:14)
  • H3722 kaphar (Piel) = ritual atonement/purging (LEV 16, 17:11)
  • H3727 kapporeth = "the covering place" (mercy seat)
  • H3680 kasah = parallel physical covering

Dimension 2: RANSOM (what is paid)

  • H3724 kopher = the ransom/cover-price (EXO 21:30; PSA 49:7; ISA 43:3)
  • G3083 lytron = ransom price (MAT 20:28; MRK 10:45) [LXX of kopher]
  • G487 antilytron = substitutionary ransom (1TI 2:6)
  • G629 apolytrosis = ransom in full / redemption (ROM 3:24; EPH 1:7; HEB 9:15)

Dimension 3: RECONCILIATION (what happens to the relationship)

  • G2643 katallage = exchange, restoration to favor (ROM 5:11; 2CO 5:18-19)
  • G2644 katallasso = to reconcile (2CO 5:18-19; ROM 5:10)
  • G604 apokatallasso = to fully reconcile (EPH 2:16; COL 1:20)
  • G2435 hilasterion = propitiation place (ROM 3:25) / mercy seat (HEB 9:5)
  • G2433 hilaskomai = to propitiate (HEB 2:17; LUK 18:13)
  • G2434 hilasmos = propitiation (1JN 2:2; 4:10)

The LXX Bridge

Hebrew -> LXX Greek -> NT Greek Path
kapporeth (H3727) hilasterion (G2435) ROM 3:25 Christ = hilasterion Mercy seat -> Christ
kaphar (H3722) hilaskomai (G2433) HEB 2:17 Christ makes hilaskomai Atone -> propitiate
kopher (H3724) lytron (G3083) MAT 20:28 Christ gives lytron Ransom -> ransom