1840. exischuó
Lexical Summary
exischuó: To prevail, to have strength, to be able

Original Word: ἐξισχύω
Part of Speech: Verb
Transliteration: exischuó
Pronunciation: ex-ee-skhoo'-o
Phonetic Spelling: (ex-is-khoo'-o)
KJV: be able
NASB: able
Word Origin: [from G1537 (ἐκ - among) and G2480 (ἰσχύω - could)]

1. to have full strength, i.e. be entirely competent

Strong's Exhaustive Concordance
be able.

From ek and ischuo; to have full strength, i.e. Be entirely competent -- be able.

see GREEK ek

see GREEK ischuo

HELPS Word-studies

1840 eksisxýō (from 1537 /ek, "completely out of from" which intensifies 2479 /isxýs, "aggressive strength, filling a need or void") – properly, "strength at work," such as overcoming difficulties in understanding ("getting past knowledge-gaps"). It is only used in Eph 3:18, referring to apprehending (decisively laying hold of) the fuller dimensions of knowing the Lord (His love, calling, presence).

Eph 3:17,18: "17So that Christ may dwell in your hearts through faith (4102 /pístis); and that you, being rooted and grounded in love, 18may be able (1840/eksisxýō) to comprehend with all the saints what is the breadth and length and height and depth" (NASU).

[(Eph 3:18) may be able (eksisxusēte) – The preposition 1537 (ek) leads "the force of fully or eminently" (WS, 855).]

NAS Exhaustive Concordance
Word Origin
from ek and ischuó
Definition
to have strength enough
NASB Translation
able (1).

Thayer's Greek Lexicon
STRONGS NT 1840: ἐξισχύω

ἐξισχύω: 1 aorist subjunctive 2 person plural ἐξισχύσητε, to be eminently able, to have full strength (cf. ἐκ, VI. 6) followed by an infinitive Ephesians 3:18. (Sir. 7:6; rare in Greek writings, as Dioscor., Strabo, Plutarch.)

Topical Lexicon
Context in Ephesians 3:18

The verb appears in the apostle’s intercessory prayer: “that you, being rooted and grounded in love, may have power to comprehend with all the saints what is the breadth and length and height and depth” (Ephesians 3:17-18). Here the term describes an enablement reaching beyond natural human capacity; Paul asks God to supply supernatural strength so believers can grasp the limitless dimensions of Christ’s love.

Theological Implications

1. Divine Initiative. The ability to understand spiritual realities originates with God, not with human intellect. Paul’s petition underscores grace as the fountainhead of all true knowledge of God (cf. 1 Corinthians 2:12).
2. Communal Comprehension. Power “with all the saints” highlights corporate learning. Christian maturity flourishes in the fellowship of the church rather than in isolated experience (Hebrews 10:24-25).
3. Love-Centered Strength. The object of the empowering is love, linking spiritual might to relational depth rather than mere feats of power (John 13:34-35).

Relation to Divine Empowerment

While ἐξισχύω is unique to Ephesians 3:18, Scripture consistently unites strength with grace:
Philippians 4:13 — “I can do all things through Christ who gives me strength.”
Colossians 1:11 — “being strengthened with all power, according to His glorious might, so that you may have full endurance and patience.”

These parallels reveal a pattern: God grants inner fortitude to accomplish tasks and to perceive truth.

Application in Personal Discipleship

1. Prayer Priority. Intercession for spiritual understanding should parallel petitions for physical needs (James 1:5).
2. Dependent Study. Bible reading becomes effectual when approached in reliance on the Spirit’s enabling (Psalm 119:18).
3. Growing Capacity. As believers exercise obedience, their capacity to apprehend divine love expands (John 7:17).

Corporate Church Life

• Teaching Ministries. Pastors and teachers labor, trusting God to empower hearers to grasp doctrine (2 Timothy 2:7).
• Worship. Shared adoration fosters the unified comprehension Paul envisions, turning theology into doxology (Ephesians 3:20-21).
• Missions. Understanding Christ’s vast love fuels evangelism and compassion, propelling the church outward (2 Corinthians 5:14).

Historical Usage in Early Church

Early patristic writings reflect this Pauline theme. Ignatius of Antioch prays that believers “be strengthened to understand” divine mysteries, echoing Ephesians 3:18. Augustine later insists that only the Spirit “widens the heart” to know the dimensions of God’s charity, demonstrating continuity in doctrinal emphasis.

Pastoral Encouragements

Believers struggling with feelings of inadequacy can anchor hope in God’s promise to supply adequate strength for comprehension and obedience. The same power that raised Christ (Ephesians 1:19-20) enables the saint to know His love and to walk in it daily.

Forms and Transliterations
εξισχυσητε εξισχύσητε ἐξισχύσητε εξιχνίασα εξιχνιάσαι εξιχνιάσαμεν εξιχνίασας εξιχνίασεν εξιχνιάσεται εξιχνιάση εξιχνιασμοί εξιχνίασον εξοδία εξοδίας εξόδιον εξόδιόν εξοδίου εξωδιάσθη exischusete exischusēte exischysete exischysēte exischýsete exischýsēte
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Englishman's Concordance
Ephesians 3:18 V-ASA-2P
GRK: ἵνα ἐξισχύσητε καταλαβέσθαι σὺν
NAS: may be able to comprehend with all
KJV: May be able to comprehend with
INT: that you might be fully able to apprehend with

Strong's Greek 1840
1 Occurrence


ἐξισχύσητε — 1 Occ.

1839
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