719. harmos
Lexical Summary
harmos: Joint, connection

Original Word: ἁρμός
Part of Speech: Noun, Masculine
Transliteration: harmos
Pronunciation: har-MOS
Phonetic Spelling: (har-mos')
KJV: joint
NASB: joints
Word Origin: [probably from G142 (αἴρω - take) (perhaps with G1 (α - Alpha) (as a particle of union) prefixed)]

1. an joint (of the body)

Strong's Exhaustive Concordance
joint.

From the same as harma; an articulation (of the body) -- joint.

see GREEK harma

NAS Exhaustive Concordance
Word Origin
from arariskó (to join together)
Definition
a joining, joint
NASB Translation
joints (1).

Thayer's Greek Lexicon
STRONGS NT 719: ἁρμός

ἁρμός, ἁρμου, (ἈΡΩ to join, fit), a joining, a joint: Hebrews 4:12. (Sophocles, Xenophon, others; Sir. 27:2.)

Topical Lexicon
Physical and Symbolic Context

In antiquity the joint was understood as the hidden place where bone meets bone, the very point at which motion becomes possible and life expresses itself in action. Because joints are both concealed within the body and essential for every movement, they form a natural metaphor for matters that are simultaneously inward and indispensable. Scripture draws on that anatomical reality to illustrate the penetrating power of God’s word and the cohesive unity of God’s people.

Usage in Hebrews 4:12

Hebrews 4:12 employs the imagery of “joints and marrow” to underscore the unrivaled reach of the living word of God: “For the word of God is living and active, sharper than any double-edged sword, piercing even to dividing soul and spirit, joints and marrow; it judges the thoughts and intentions of the heart.” The joint stands as the deepest point a sword can penetrate before striking the very life-giving marrow. The writer to the Hebrews chooses this vivid picture to assure believers that nothing in their being—physical or spiritual—remains impervious to divine scrutiny. Just as only a skilled surgeon’s blade could separate a joint from its adjoining bone, so only God’s word can expose the finest distinctions of the human heart.

Theological Significance

1. Thorough Discernment

By pairing “joints” with “marrow,” the verse conveys comprehensive discernment. Soul and spirit represent the inner immaterial life; joints and marrow represent the hidden physical life. Together they affirm that God addresses the whole person. His word is not merely informative; it is operative, cutting past every self-protective barrier to reveal what truly lies beneath.

2. Covenant Accountability

The immediate context of Hebrews 4 warns against unbelief like that shown in the wilderness generation. The joint metaphor underlines covenant accountability: if the word can reach the very hinge by which a limb moves, then no secret sin or motive escapes the gaze of the covenant Lord.

3. Encouragement to Rest

Paradoxically, the verse appears within an exhortation to enter God’s rest. The believer who allows the divine scalpel to do its work finds true rest because nothing remains concealed, and forgiveness can fully cleanse (Hebrews 4:9-16).

Relation to Other Scriptural Imagery

Ezekiel 37:7 pictures bones “coming together, bone to bone,” a complementary image where God re-assembles joints in resurrection life.
Psalm 22:14 laments, “All my bones are dislocated,” portraying messianic suffering in which the joints are pulled apart, contrasting the wholeness God intends.
Ephesians 4:16 describes the Church as a body “joined and held together by every supporting ligament,” showing that spiritual joints symbolize unity and functionality within Christ’s body.
Colossians 2:19 echoes the same principle, as the Head supplies growth “through its joints and ligaments.” Together these passages move from the exposing work of God’s word to the unifying work of Christ’s life in His people.

Historical and Cultural Background

Greek medical writers such as Hippocrates and Galen discussed joints as marvels of anatomical design requiring delicate treatment. A double-edged sword was a standard military weapon capable of decisive cuts in close combat. By merging surgical precision with martial sharpness, Hebrews 4:12 evokes both the healer and the warrior—images well known to an audience familiar with Greek medicine and Roman armament. The inspired author appropriates everyday realities to communicate transcendent truth.

Practical Applications for Christian Life and Ministry

1. Self-Examination

Believers are invited to open their innermost thoughts and intentions to Scripture’s scrutiny, trusting that the same divine word that cuts also heals.

2. Preaching and Teaching

Those who minister the word must wield it with reverent care, recognizing its capacity to penetrate beyond surface behaviors to heart motivations.

3. Pastoral Care

When counseling, shepherds rely on the word’s ability to reach the “joints” of spiritual dysfunction, bringing restoration rather than mere behavioral adjustment.

4. Corporate Unity

Since joints enable coordinated movement, the image challenges congregations to maintain healthy connections so the body of Christ may function effectively.

Summary

Strong’s Greek 719 appears only once in the New Testament, yet the concept it conveys reverberates throughout Scripture. By portraying joints as the hidden hinges of bodily life, Hebrews 4:12 magnifies the living word’s power to expose, convict, and ultimately restore the whole person. This single occurrence thus anchors a rich biblical theology of divine penetration, covenant accountability, and the essential unity of Christ’s body.

Forms and Transliterations
αρμων αρμών ἁρμῶν armon armōn harmon harmôn harmōn harmō̂n
Links
Interlinear GreekInterlinear HebrewStrong's NumbersEnglishman's Greek ConcordanceEnglishman's Hebrew ConcordanceParallel Texts
Englishman's Concordance
Hebrews 4:12 N-GMP
GRK: καὶ πνεύματος ἁρμῶν τε καὶ
NAS: of both joints and marrow,
KJV: spirit, and of the joints and marrow,
INT: and spirit of joints and also

Strong's Greek 719
1 Occurrence


ἁρμῶν — 1 Occ.

718
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