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G2479

ἰσχύς

ischýs /is-khoos'/ Ask about this word
from a derivative of (force; compare , a form of ἔχω)
forcefulness (literally or figuratively)
ability, might(-ily), power, strength.

Word Study

In depth

A plain-language study of ischýs — the range of meaning it carries, how Scripture actually uses it, and where it points. Written for readers who don’t know the original language.

Core Meaning & Semantic Range

The Greek word ischýs, represented by G2479, signifies forcefulness, translated as strength, might, or ability. This term, deriving from a word for force, appears 11 times across 11 unique verses. It conveys a sense of inherent power, capacity, and vigor, whether human or divine.

Biblical Occurrences & Contextual Analysis

In scripture, G2479 is prominently featured in the Great Commandment, where believers are called to love God with all their strength (Mark 12:30; Luke 10:27). This context emphasizes the complete devotion of one's personal capacity. The word also describes divine power, as in Ephesians 6:10, which exhorts believers to be strong "in the power of his might." In Revelation, strength is one of the key attributes ascribed to God and the Lamb in heavenly worship (Revelation 5:12; Revelation 7:12). It is also used adverbially to describe the cry of an angel, who "cried mightily with a strong voice" Revelation 18:2.

Related Words & Concepts

Several related Greek words help clarify the concept of strength and power:

  • G1411 dýnamis: This word refers to force and, specifically, miraculous power. It is used alongside G2479 to describe the greatness of angels in "power and might" 2 Peter 2:11 and is a component of God's "exceeding greatness of his power" Ephesians 1:19.
  • G1743 endynamóō: Defined as "to empower," this verb shows the action of granting strength. It is directly linked to G2479 in Ephesians 6:10, where believers are told to "be strong in the Lord, and in the power of his might."
  • G2904 krátos: Meaning vigor or dominion, this term often appears with G2479 to form a powerful pair. In Ephesians 1:19, Paul refers to "his mighty power," combining both words to describe the force available to believers.

Theological Significance

The theological weight of G2479 is significant, highlighting key principles of faith and divinity.

  • Total Human Devotion: The call to love God with all one's strength establishes that devotion is not merely an emotional or intellectual exercise but involves the full measure of one's personal capacity and vigor (Luke 10:27; Mark 12:33).
  • God as the Source of Strength: The Christian's power for service and spiritual warfare is not self-generated but is derived from the Lord. Believers are instructed to minister from the ability which God provides 1 Peter 4:11 and to stand firm in the Lord's own might Ephesians 6:10.
  • An Attribute of Divine Being: In the doxologies of Revelation, strength and might are declared to be eternal attributes belonging to God and the Lamb, central to their nature and worthy of praise (Revelation 5:12; Revelation 7:12).
  • Manifestation of God's Power: The term is part of the description of God's active power at work for believers, described as "the working of his mighty power" Ephesians 1:19.

Summary

In summary, G2479 is a multifaceted term that encompasses the totality of human effort in devotion, the endowed power a believer receives from God, and an intrinsic attribute of God's own being. It bridges the concepts of human capacity and divine forcefulness, illustrating that true strength, whether for service or worship, ultimately finds its source and expression in God himself.

How the KJV Renders It

Translation

Strong’s lists the renderings but not their weight. These are counted from the King James text of the tagged verses — the bar under each is how often the translators actually reached for it. Select one to filter the occurrences below.

Grammatical Forms

Morphology

In the Greek New Testament, this word appears as a noun and an adjective across 11 occurrences, inflected in 5 grammatical forms — each row is one form, and the bar is how often it is that form.

  • Genitive Singular Feminine
  • Dative Singular Feminine
  • Accusative Singular Feminine
  • Dative Singular Feminine
  • Nominative Singular Feminine
Nominative
The subject of the verb.
Genitive
Possession or source — often "of".
Dative
The indirect object — often "to" or "for".
Accusative
The direct object of the verb.
Singular
One.
Feminine
Feminine grammatical gender.

Related Words

Related

Other entries the study above points to — each one is drawn from a reference it makes. Follow the trail to see how the words connect.

Theographic Context

Context

The people, places, and span of history the verses containing this word touch on — drawn from the theographic tagging of Scripture. Select any name to isolate its verses in the occurrence list.

Biblical Distribution

Distribution

Appears in 11 verses across 7 of the 27 books. Most frequent in Revelation (3 verses); never once in the other 20.

2
Mark
1
Luke
2
Ephesians
1
2 Thessalonians
1
1 Peter
1
2 Peter
3
Revelation

Every Occurrence

Concordance

Every verse where the word is tagged in the King James text. Filter by book, by the English word the translators chose, or search within the verses.

Sources. Definition and numbering: James Strong, Exhaustive Concordance of the Bible (1890). Morphology: STEPBible / Tyndale House (CC BY). Verse tagging: the King James text keyed to Strong’s numbers. Every count on this page is computed from the tagged corpus, not estimated.