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G2121

εὔκαιρος

eúkairos /yoo'-kahee-ros/ Ask about this word
from εὖ and καιρός
well-timed, i.e. opportune
convenient, in time of need.

Word Study

In depth

A plain-language study of eúkairos — 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 eúkairos, represented by G2121, means well-timed or opportune. It appears only 2 times in 2 unique verses. It is used to describe a moment that is either convenient for human purposes or a specific time of need for divine help.

Biblical Occurrences & Contextual Analysis

In scripture, G2121 illustrates two distinct types of opportune moments. In the Gospel of Mark, it describes the "convenient" day that Herod G2264 chose for his birthday G1077 supper G1173 Mark 6:21. This timing serves an earthly purpose. In contrast, Hebrews presents a spiritual opportunity, urging believers to approach the throne of grace to find help "in time of need" G2121, highlighting a moment of vulnerability met by divine provision Hebrews 4:16.

Related Words & Concepts

Several related words provide context for the concept of opportune timing:

  • G2250 hēméra: This word for day is directly qualified by G2121 in the account of Herod's feast, establishing a "convenient day" for the celebration Mark 6:21.
  • G5485 cháris: This word for grace is what believers are promised they will find in their "time of need" G2121, emphasizing the divine influence available at the opportune moment Hebrews 4:16.
  • G2362 thrónos: The throne of grace is the destination for those seeking help in their "time of need," connecting the opportune moment with a place of divine power and authority Hebrews 4:16.

Theological Significance

The theological weight of G2121 is seen in its contrasting applications.

  • Human Opportunism vs. Divine Provision: The word juxtaposes a humanly-defined opportune moment with a divinely-appointed one. Herod's "convenient" day was chosen for earthly celebration with his lords G3175 and high captains G5506 Mark 6:21. The believer's "time of need" is an occasion for receiving heavenly aid Hebrews 4:16.
  • Well-timed Grace: The concept of a "time of need" implies that God's assistance is specifically "well-timed." Believers are invited to find G2147 grace G5485 to help at the precise moment it is required.
  • Confident Access: We are called to come G4334 boldly to the throne G2362 of grace in this opportune time to obtain G2983 mercy G1656 and find grace Hebrews 4:16.

Summary

In summary, eúkairos G2121 is a concise but potent term that encapsulates the idea of a perfectly timed moment. Though appearing only twice, it creates a powerful contrast between a self-serving, convenient time Mark 6:21 and a moment of crisis where God's grace is opportunely available Hebrews 4:16. It teaches that for every "time of need," there is a corresponding "well-timed" provision of grace from God's throne.

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 an adjective across 2 occurrences, inflected in 2 grammatical forms — each row is one form, and the bar is how often it is that form.

  • Accusative Singular Feminine
  • Genitive Singular Feminine
Genitive
Possession or source — often "of".
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 2 verses across 2 of the 27 books. Most frequent in Mark and Hebrews (1 verse each); never once in the other 25.

1
Mark
1
Hebrews

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.