182. akatastatos
Lexical Summary
akatastatos: Unstable, restless, disorderly

Original Word: ἀκατάστατος
Part of Speech: Adjective
Transliteration: akatastatos
Pronunciation: ah-kah-TAS-tah-tos
Phonetic Spelling: (ak-at-as'-tat-os)
KJV: unstable
NASB: restless, unstable
Word Origin: [from G1 (α - Alpha) (as a negative particle) and a derivative of G2525 (καθίστημι - made)]

1. inconstant

Strong's Exhaustive Concordance
unstable.

From a (as a negative particle) and a derivative of kathistemi; inconstant -- unstable.

see GREEK a

see GREEK kathistemi

HELPS Word-studies

Cognate: 182 akatástatos – unsettled. See 181 (akatastasiais).

NAS Exhaustive Concordance
Word Origin
from alpha (as a neg. prefix) and kathistémi
Definition
unstable
NASB Translation
restless (1), unstable (1).

Thayer's Greek Lexicon
STRONGS NT 182: ἀκατάστατος

ἀκατάστατος, (καθίστημι), unstable, inconstant, restless: James 1:8, and L T Tr WH in also, but less fitly; (cf. Hermae Past. l. ii. mand. 2, 3 πονηρόν πνεῦμα ἐστιν καταλαλιά, καί ἀκατάστατον δαιμόνιον, μηδέποτε ἐιρηνεῦον, ἀλλά etc.). ((Hippocrates and others) Polybius 7, 4, 6, others (the Sept. Isaiah 54:11).) #REM: LEFT OFF HERE

Topical Lexicon
Definition and Concept

Strong’s Greek 182 describes a state of restlessness, disorder, or instability. The word paints a picture of something that cannot settle, whether in thought, speech, or conduct. It is not simple fickleness; it is a deeper moral unreliability that threatens a person’s entire walk with God.

Old Testament Background

While the exact Greek term is not found in the Septuagint, its idea echoes Old Testament warnings: “Unstable as water, you shall not excel” (Genesis 49:4); “the wicked are like the tossing sea” (Isaiah 57:20). Wisdom literature repeatedly links instability with folly (Proverbs 13:16; 25:28). These texts frame instability as the antithesis of covenant faithfulness.

Occurrences in the New Testament

1. James 1:8—“He is a double-minded man, unstable in all his ways”.
• Here the word describes a believer who prays but doubts, allowing competing loyalties to fracture his life.
2. James 3:8—“but no man can tame the tongue. It is a restless evil, full of deadly poison”.
• The tongue’s “restless” nature mirrors the inner instability of the heart, linking speech with character.

Theological Significance

1. Integrity of Faith: Instability undermines single-hearted devotion (Psalm 86:11; Matthew 6:24).
2. Source of Division: A restless spirit disrupts fellowship (James 3:16; compare 2 Corinthians 12:20).
3. Contrast with Christ: Jesus is the same “yesterday and today and forever” (Hebrews 13:8); instability therefore reflects distance from His character.

Practical Ministry Implications

• Discipleship: Shepherds must cultivate steadfastness through sound doctrine (Ephesians 4:14–16).
• Counseling: Double-mindedness often surfaces as indecision or chronic inconsistency; grounding counselees in Scripture and prayer addresses the root.
• Speech Ethics: Because James links the restless tongue with instability, teaching on controlled, grace-filled speech (Ephesians 4:29) becomes essential for congregational health.

Patristic and Historical Usage

Early Church Fathers saw instability as a gateway to heresy. Athanasius contrasted the unchanging Word with the “shifting opinions” of Arians. The Reformers likewise warned that a heart untethered to Scripture drifts into error, citing James as a pastoral corrective.

Contemporary Application

Modern culture prizes novelty; believers therefore face constant pressure toward spiritual restlessness. Practices such as regular Scripture intake, covenant community, and Sabbath rhythms serve as antidotes, anchoring the soul in God’s unchanging truth.

Related Terms and Themes

• δίψυχος (double-minded) – James 1:8
• ἀστατέω (to be unsettled) – Acts 17:21 (conceptually)
• Firmness/steadfastness – 1 Corinthians 15:58; Colossians 1:23
• Peace of Christ – Colossians 3:15, the opposite of inner turbulence

Instability, whether in thought or tongue, is not a minor flaw but a critical spiritual condition. Scripture consistently calls believers from restlessness to the steadfast life that reflects their unwavering Lord.

Forms and Transliterations
ακαταστατον ἀκατάστατον ακαταστατος ακατάστατος ἀκατάστατος akatastaton akatástaton akatastatos akatástatos
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Englishman's Concordance
James 1:8 Adj-NMS
GRK: ἀνὴρ δίψυχος ἀκατάστατος ἐν πάσαις
NAS: man, unstable in all
KJV: man [is] unstable in
INT: [he is] a man double-minded unstable in all

James 3:8 Adj-NNS
GRK: δύναται ἀνθρώπων ἀκατάστατον κακόν μεστὴ
NAS: the tongue; [it is] a restless evil
INT: is able of men [it is] an unrestrainable evil full

Strong's Greek 182
2 Occurrences


ἀκατάστατον — 1 Occ.
ἀκατάστατος — 1 Occ.

181
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