Word Study for H3286 (יָעַף) | Strong's Concordance

yâʻaph /yaw-af'/ Ask about this word

Roota primitive root

Meaningto tire (as if from wearisome flight)

KJV usagefaint, cause to fly, (be) weary (self).

Word Study

In depth

A plain-language study of yâʻaph — 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 Hebrew word yâʻaph, represented by H3286, is a primitive root used to describe tiring, fainting, or being weary, often as if from exhausting flight. It also carries the meaning "cause to fly." This word appears 9 times across 9 unique verses, primarily to contrast human frailty with divine endurance or to describe the result of futile effort.

Biblical Occurrences & Contextual Analysis

In the biblical narrative, H3286 is used to establish a fundamental contrast between God and humanity. God, the Creator, "fainteth not, neither is weary" Isaiah 40:28, highlighting His inexhaustible nature. Conversely, even the most vigorous humans, the "youths," are shown to "faint" and grow weary Isaiah 40:30. The word is also used to illustrate the consequences of judgment and vain labor, as the people building Babylon "shall be weary" (Jeremiah 51:58, Jeremiah 51:64). In a unique context, the man Gabriel is described as "being caused to fly swiftly," demonstrating a use of H3286 related to rapid, divinely-powered movement rather than exhaustion Daniel 9:21.

Related Words & Concepts

Several related words help clarify the concepts of weariness and strength:

H3021 yâgaʻ (to be exhausted, to tire, to toil): This word is often paired directly with yâʻaph for emphasis, as in the declaration that God "fainteth not, neither is weary" Isaiah 40:28 and that youths "shall faint and be weary" Isaiah 40:30.
H3581 kôach (vigor, force, strength): This term serves as a direct antonym. It is the strength that God gives, enabling those who wait on Him to "not faint" Isaiah 40:31. It is also the human strength that fails the hungry and thirsty smith, causing him to be "faint" Isaiah 44:12.
H6960 qâvâh (to expect, patiently, tarry, wait for): This word provides the condition for overcoming weariness. The promise that "they shall walk, and not faint" is given specifically to "they that wait upon the LORD" Isaiah 40:31.
H3782 kâshal (to totter or waver, stumble, faint or fall): This word describes the ultimate outcome of the weariness expressed by yâʻaph. In Isaiah 40:30, the young men who faint and are weary "shall utterly fall."

Theological Significance

The theological weight of H3286 is centered on the source of all strength.

Human Frailty: The word consistently illustrates the limits of human ability. Whether it is the physical exhaustion of a smith Isaiah 44:12 or the inherent weakness of even the strongest youths Isaiah 40:30, scripture uses yâʻaph to show that human strength is finite.
The Futility of Labor Against God: In both Jeremiah and Habakkuk, those who work on projects destined for judgment, such as the walls of Babylon, ultimately "shall be weary" Jeremiah 51:58 and "weary themselves for very vanity" Habakkuk 2:13. This links weariness to spiritually empty and futile efforts.
Divine Endurance: The absolute contrast is God Himself, who does not faint Isaiah 40:28. This divine characteristic becomes the basis for hope.
God as the Source of Strength: The promise of not fainting is directly tied to a relationship with God. It is those who "wait upon the LORD" who renew their strength and "shall walk, and not faint" Isaiah 40:31, shifting the source of endurance from self to God.

Summary

In summary, H3286 is a powerful word that defines the boundary between human limitation and divine limitlessness. It depicts physical and spiritual exhaustion resulting from both natural weakness and vain, godless effort. From the fainting smith to the weary builders of Babylon, yâʻaph marks the end of human capacity. Yet, it also points toward the ultimate solution: the promise that those who wait for the Lord will receive supernatural endurance and will not faint.

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 Hebrew Old Testament, this word appears as a verb and an adjective across 10 occurrences, inflected in 7 grammatical forms — each row is one form, and the bar is how often it is that form. Select any form to read what each part of its name means, and to filter the occurrence list to it.

יִיעָפוּ
יָעֵפוּ
מֻעָף
יְּעֵפִים
יִעֲפוּ
יִּיעָף
יִיעַף

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 9 verses across 4 of the 39 books. Most frequent in Isaiah (4 verses); never once in the other 35.

Isaiah

Jeremiah

Daniel

Habakkuk

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, by grammatical form, 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.