# G1242 - diatheke **Strong's:** [G1242](https://www.blueletterbible.org/lexicon/g1242/) · BLB lookup **Pronunciation:** dee-ath-ay'-kay **Part of speech:** feminine noun **NT occurrences:** 33 (concentrated in Hebrews, 17 of the 33, and in the Pauline letters and synoptic Last-Supper narratives) **Hebrew equivalent:** [*berith*](/codex/h1285-berith/) (H1285), *diathēkē* is the LXX's standard rendering of *berith* ## Semantic range The Greek *diathēkē* sits at a fault line of meaning that has shaped Christian-theological vocabulary: 1. **Covenant**, solemn binding agreement, the LXX-mediated biblical-Hebrew sense (= *berith*). This is the dominant NT sense. 2. **Testament / last will**, the disposition of one's estate to be enacted at death. This is the dominant *classical* and *Hellenistic-Greek* sense outside the LXX/NT. 3. **Disposition / arrangement**, the broader root sense from *diatithēmi*, "to set out / arrange / appoint." The distinctively biblical use leverages all three senses. [Hebrews 9:15-17](/codex/hebrews-9-15-17/) explicitly *plays on the polysemy*: the same word (*diathēkē*) names both the covenant Christ inaugurates *and* the testament that requires the death of the testator to take effect. This is not an accident; the author exploits the dual semantic field theologically. ## Why the Greek translators chose *diathēkē* for *berith* This is one of the most consequential translation decisions in the history of Christian theology. In ordinary Hellenistic Greek, *diathēkē* almost always meant "last will and testament", the unilateral disposition of an estate. The standard Greek word for a *bilateral, negotiated, mutually-binding agreement* was *synthēkē* (συνθήκη, from *syn*, "with" + *tithēmi*, "place"; literally "co-laid-down"). Yet the Septuagint translators (3rd-2nd c. BC) chose *diathēkē*, not *synthēkē*, to render Hebrew *berith*, and they did so consistently across nearly 300 occurrences. The likely reasons: - ***Berith* is asymmetric.** OT covenants are not negotiations between equals. Yahweh *imposes* the covenant; Israel *receives* it. The covenant terms are not jointly drafted. *Diathēkē*'s connotation of *unilateral disposition* (the testator's will) captured this asymmetry better than *synthēkē*'s connotation of *bilateral negotiation*. - ***Berith* often involves *blood and death*.** Covenant-cutting (Hebrew *karat berith*; see [H1285 - berith](/codex/h1285-berith/)) involved sacrificial death; the covenant required the death of the covenant-victim. *Diathēkē* in classical Greek required the death of the testator. The death-grounded structure was shared. - ***Berith* establishes binding obligation.** Both *diathēkē* (in its testamentary force) and *berith* are not just promises but *legally binding instruments*. *Synthēkē* could be revoked; a *diathēkē* properly enacted could not. The translation set the stage for the NT's theological vocabulary. When the NT writers say *diathēkē*, covenant, they inherit both the LXX's biblical-covenantal sense *and* the broader Greek world's testamentary connotation. This shapes: - **The Last Supper:** "this cup is the new *diathēkē* in My blood" ([Lk 22:20](/codex/luke-22-20/); [1 Cor 11:25](/codex/1-corinthians-11-25/)), covenant *and* testament-enacted-by-death. - **Hebrews:** the entire epistle's covenant theology depends on the dual sense. - **Christian Bible vocabulary:** "Old Testament" and "New Testament" as names for the two halves of the Christian Bible derive from *Vetus Testamentum* and *Novum Testamentum*, the Latin renderings of *palaia diathēkē* and *kainē diathēkē*. The Christian English-speaking world calls the two halves of its Bible "Testaments" because of this LXX-NT translation choice. ## Theological force ### The new *diathēkē*, Christ's covenant inauguration The most decisive NT *diathēkē* texts: - **[Mt 26:28](/codex/matthew-26-28/)**, "this is My blood of the *diathēkē*, which is poured out for many for forgiveness of sins" - **[Mk 14:24](/codex/mark-14-24/)**, "this is My blood of the *diathēkē*, which is poured out for many" - **[Lk 22:20](/codex/luke-22-20/)**, "this cup which is poured out for you is the new *diathēkē* in My blood" - **[1 Cor 11:25](/codex/1-corinthians-11-25/)**, "this cup is the new *diathēkē* in My blood" The Last Supper sayings are covenant-inaugurating language. Christ does not invent the form; He fulfills the prophesied *new covenant* of [Jer 31:31-34](/codex/jeremiah-31-31-34/) (LXX: *diathēkēn kainēn*). The new covenant is enacted *in His blood*, sealed in the death of the testator-covenant-mediator. ### Hebrews on *diathēkē* Hebrews uses *diathēkē* 17 times (more than half its NT occurrences). The structural argument: - **[Heb 7:22](/codex/hebrews-7-22/)**, Jesus is "the guarantee of a better *diathēkē*" - **[Heb 8:6-13](/codex/hebrews-8-6-13/)**, Christ is "the mediator of a better *diathēkē*, which has been enacted on better promises"; Hebrews quotes [Jer 31:31-34](/codex/jeremiah-31-31-34/) in full; "When He said, 'A new *diathēkē*,' He has made the first obsolete" - **[Heb 9:1-22](/codex/hebrews-9-1-22/)**, extended exposition: the first *diathēkē* required earthly sanctuary, repeated sacrifice, and animal blood; the new *diathēkē* requires Christ's blood once for all - **[Heb 9:15-17](/codex/hebrews-9-15-17/)**, the *polysemy*-leveraging argument: "And for this reason He is the mediator of a new *diathēkē*, so that, since a death has taken place for the redemption of the transgressions that were committed under the first *diathēkē*, those who have been called may receive the promise of the eternal inheritance. For where a *diathēkē* is, there must of necessity be the death of the one who made it. For a *diathēkē* is valid only when men are dead, for it is never in force while the one who made it lives." Verses 16-17 explicitly invoke the *testamentary* sense to ground the necessity of Christ's death; verse 18 then returns to the *covenant* sense for the OT parallel. - **[Heb 12:24](/codex/hebrews-12-24/)**, "to Jesus, the mediator of a new *diathēkē*, and to the sprinkled blood, which speaks better than the blood of Abel" - **[Heb 13:20](/codex/hebrews-13-20/)**, "the blood of the eternal *diathēkē*" The Hebrews argument depends on the dual sense: *diathēkē* is both (a) a covenantal-binding instrument requiring sacrificial inauguration and (b) a testamentary disposition requiring the testator's death to take effect. Christ's death satisfies both senses simultaneously. This is *theology* doing exegetical work that English "covenant" alone or "testament" alone cannot replicate. ### Pauline use Paul uses *diathēkē* 9 times. Distinctive Pauline themes: - **[Gal 3:15-17](/codex/galatians-3-15-17/)**, Paul uses the testamentary sense ("though it is only a man's *diathēkē*, yet when it has been ratified, no one sets it aside or adds conditions to it") to argue that the Abrahamic covenant precedes and outranks the Mosaic; the [Mosaic Law](/codex/mosaic-law/) cannot annul the prior Abrahamic *diathēkē*. - **[2 Cor 3:6](/codex/2-corinthians-3-6/), [14](/codex/2-corinthians-3-14/)**, Paul as servant of "a new *diathēkē*, not of the letter but of the Spirit"; the "old *diathēkē*" still has a "veil" over it for those who do not see Christ. - **[Rom 9:4](/codex/romans-9-4/)**, "the *diathēkai* (plural, covenants)" listed among Israel's privileges. - **[Rom 11:27](/codex/romans-11-27/)**, quoting [Isa 59:21](/codex/isaiah-59-21/) and [Jer 31:33-34](/codex/jeremiah-31-33-34/): "this is My *diathēkē* with them, when I take away their sins." - **[Eph 2:12](/codex/ephesians-2-12/)**, Gentiles before Christ were "strangers to the *diathēkai* of promise." ### Pauline plurality of covenants Paul speaks of *diathēkai* (plural), the multiple OT covenants God made with Israel: Abrahamic, Mosaic, Davidic, etc. ([Rom 9:4](/codex/romans-9-4/); [Eph 2:12](/codex/ephesians-2-12/)). The new *diathēkē* in Christ does not flatten this plurality; it fulfills the Abrahamic promise ([Gal 3:15-18](/codex/galatians-3-15-18/)) while transcending the Mosaic ([Heb 8](/codex/hebrews-8/)) and inheriting the Davidic ([Lk 1:32-33](/codex/luke-1-32-33/); [Acts 13:34](/codex/acts-13-34/)). ### The synoptic Last-Supper sayings [Mk 14:24](/codex/mark-14-24/), [Mt 26:28](/codex/matthew-26-28/), and [Lk 22:20](/codex/luke-22-20/) / [1 Cor 11:25](/codex/1-corinthians-11-25/) differ in detail but all cluster around the same claim: Christ's blood inaugurates the *new diathēkē*. Mk and Mt have "blood of the covenant" (echoing [Exod 24:8](/codex/exodus-24-8/), Sinai-covenant blood); Lk and 1 Cor have "the new covenant in my blood" (echoing [Jer 31:31](/codex/jeremiah-31-31/)). Both echoes are intentional. The Sinai-covenant-blood reference shows continuity with God's covenantal-redemptive pattern; the Jeremianic new-covenant reference shows fulfillment of prophetic anticipation. ## Implications ### 1. The Christian Bible is structurally covenantal The very names *Old Testament* and *New Testament* embed *diathēkē* into the structural identity of the Christian Bible. The two halves of the Christian canon are named not "books" or "stories" or "testimonies" but *covenants*, the documents of God's two covenantal economies, the second fulfilling and superseding the first. To understand the Bible is, structurally, to understand it as *diathēkē*-shaped. ### 2. The "covenant" / "testament" duality is theologically load-bearing [Hebrews 9:15-17](/codex/hebrews-9-15-17/) deliberately exploits the polysemy. Christ's death is *both* the sacrificial inauguration of a new covenant (in line with the OT *berith*-shaped covenant-cutting tradition) *and* the death of the testator that brings a will into force. The English-language tradition's hesitation between "covenant" and "testament" preserves this dual force; the classical Greek and Hebrew traditions did not have a single word that carried both, but *diathēkē* in NT Greek does. ### 3. Salvation is covenantal, not merely transactional The *diathēkē* framework places redemption inside a *relational-covenantal* structure: Christ's death redeems "those who have been called" ([Heb 9:15](/codex/hebrews-9-15/)) into a *covenant relationship* with God, not merely into a transactional debt-payment. This anchors the Reformed and Lutheran covenant-soteriology traditions and shapes the codex's [Penal Substitutionary Atonement](/codex/penal-substitutionary-atonement/) / [Atonement Theory Spread](/codex/atonement-theory-spread/) frame. ### 4. The transition from old to new is *covenantal*, not casual The new *diathēkē* does not merely add to or modify the old; it *replaces* it as the governing covenantal frame. This is the structural argument of [Christians Not Under Mosaic Law](/codex/christians-not-under-mosaic-law/), and it depends on understanding both *berith* and *diathēkē* as *binding governing instruments*, not optional moral codes. ### 5. The body of Christ is a covenant community The NT church is not a voluntary religious association in the modern Western sense; it is a *covenant community*, those gathered into the new *diathēkē* in Christ's blood. Baptism (the sign of entry) and the Lord's Supper (where the *diathēkē*-blood-language appears in every institution narrative) are covenantal ordinances. This shapes ecclesiology fundamentally. ## Notable verses ### Synoptic Last-Supper covenant institution - [Mt 26:28](/codex/matthew-26-28/), "this is My blood of the diathēkē" - [Mk 14:24](/codex/mark-14-24/), "this is My blood of the diathēkē" - [Lk 22:20](/codex/luke-22-20/), "this cup... the new diathēkē in My blood" ### Pauline covenant texts - [1 Cor 11:25](/codex/1-corinthians-11-25/), "the new diathēkē in My blood" - [2 Cor 3:6](/codex/2-corinthians-3-6/), "servants of a new diathēkē, not of the letter but of the Spirit" - [2 Cor 3:14](/codex/2-corinthians-3-14/), "the same veil remains unlifted at the reading of the old diathēkē" - [Gal 3:15-17](/codex/galatians-3-15-17/), testamentary-style argument; the Abrahamic diathēkē precedes the Mosaic - [Gal 4:24](/codex/galatians-4-24/), Hagar/Sarah allegory: two diathēkai - [Rom 9:4](/codex/romans-9-4/), "the diathēkai" among Israel's privileges - [Rom 11:27](/codex/romans-11-27/), "this is My diathēkē with them, when I take away their sins" - [Eph 2:12](/codex/ephesians-2-12/), Gentiles "strangers to the diathēkai of promise" ### Hebrews, the diathēkē epistle - [Heb 7:22](/codex/hebrews-7-22/), "Jesus the guarantee of a better diathēkē" - [Heb 8:6](/codex/hebrews-8-6/), [8](/codex/hebrews-8-8/), [9](/codex/hebrews-8-9/), [10](/codex/hebrews-8-10/), "mediator of a better diathēkē... a new diathēkē... My diathēkē" - [Heb 8:13](/codex/hebrews-8-13/), "He has made the first obsolete" - [Heb 9:4](/codex/hebrews-9-4/), "ark of the diathēkē... the tablets of the diathēkē" - [Heb 9:15-17](/codex/hebrews-9-15-17/), polysemy-leveraging: covenant + testament - [Heb 9:20](/codex/hebrews-9-20/), "this is the blood of the diathēkē which God commanded you" (citing [Exod 24:8](/codex/exodus-24-8/)) - [Heb 10:16](/codex/hebrews-10-16/), [29](/codex/hebrews-10-29/), quoting [Jer 31:31-34](/codex/jeremiah-31-31-34/); "the blood of the diathēkē by which he was sanctified" - [Heb 12:24](/codex/hebrews-12-24/), "Jesus, the mediator of a new diathēkē" - [Heb 13:20](/codex/hebrews-13-20/), "the blood of the eternal diathēkē" ### Apostolic preaching - [Acts 3:25](/codex/acts-3-25/), "you are sons of... the diathēkē which God made with your fathers" - [Acts 7:8](/codex/acts-7-8/), "He gave him the diathēkē of circumcision" ### Apocalypse - [Rev 11:19](/codex/revelation-11-19/), "the ark of His diathēkē appeared in His temple" ## Patristic / scholarly note - **The LXX translators (3rd-2nd c. BC)**, established the *diathēkē* = *berith* equivalence that the NT inherits. - **The Vulgate (Jerome, late 4th c. AD)** rendered *diathēkē* as *testamentum* in most contexts, fixing the Latin-Christian convention that gives "Old Testament" / "New Testament" their names. - **[John Chrysostom](/codex/john-chrysostom/), *Homilies on Hebrews***, major patristic engagement with [Heb 9:15-17](/codex/hebrews-9-15-17/) and the covenant/testament duality. - **Aquinas, *In Hebraeos***, medieval scholastic treatment. - **Calvin, *Institutes* II.10-11**, covenantal continuity between Old and New, with significant Reformed development. - **Geerhardus Vos, *Biblical Theology*** (1948), the modern Reformed-biblical-theology architecture is built on *berith* / *diathēkē* covenantal progression. - **O. Palmer Robertson, *The Christ of the Covenants*** (1980), the contemporary Reformed-covenantal classic. - **William Lane, *Hebrews* (WBC)**; **Peter O'Brien, *Hebrews* (PNTC)**, major modern commentaries on the *diathēkē*-saturated epistle. - **Stephen Wellum & Peter Gentry, *Kingdom through Covenant*** (2012/2018), progressive-covenantalist framework. - **John Walton, *The Lost World of the Torah*** (2017), ANE-context engagement. ## See also - [H1285 - berith](/codex/h1285-berith/), Hebrew covenant; the OT word *diathēkē* translates - [H2617 - hesed](/codex/h2617-hesed/), covenant lovingkindness; the relational substance of *berith* / *diathēkē* - [Old Covenant](/codex/old-covenant/), [New Covenant](/codex/jeremiah-31-33/), concept hubs - [Mosaic Law](/codex/mosaic-law/), [Grace vs Law](/codex/grace-vs-law/), [Law as Tutor (Paidagogos)](/codex/law-as-tutor-paidagogos/), covenantal framework - [Christians Not Under Mosaic Law](/codex/christians-not-under-mosaic-law/), structured argument for the covenantal transition - [Are Christians Still Under the Law](/codex/are-christians-still-under-the-law/), source page - [Melchizedekian Priesthood](/codex/melchizedekian-priesthood/), [Levitical Priesthood](/codex/levitical-priesthood/), priestly transition - [Penal Substitutionary Atonement](/codex/penal-substitutionary-atonement/), [Atonement Theory Spread](/codex/atonement-theory-spread/), atonement is covenant-shaped - Passages: [Matthew 26:28](/codex/matthew-26-28/), [Luke 22:20](/codex/luke-22-20/), [Hebrews 8.13](/codex/hebrews-8-13/), [Jeremiah 31.29-34](/codex/jeremiah-31-29-34/), [2 Corinthians 3:6](/codex/2-corinthians-3-6/) - Entities: [Moses](/codex/moses/), [Melchizedek](/codex/melchizedek/), [Jesus](/codex/jesus/) ## Notes _Lexical workspace for diathēkē. The covenant/testament polysemy is theologically load-bearing, preserve both senses when explaining and translating._