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G5599

a primary interjection; as a sign of the vocative case, O; as a note of exclamation, oh
O.

Word Study

In depth

A plain-language study of ō — 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 ō, represented by G5599, is a primary interjection used as a direct and emotional exclamation, equivalent to "O" or "oh". It appears 17 times in 17 unique verses. Though simple, its function is to add significant weight and immediacy to a statement, signaling a direct address filled with emotion, whether it be rebuke, wonder, or admiration.

Biblical Occurrences & Contextual Analysis

In scripture, G5599 is used to introduce a variety of impassioned addresses. It is frequently employed to issue a sharp rebuke, as when Jesus addresses the "faithless and perverse generation" Matthew 17:17 or when Paul exclaims, "O foolish Galatians" Galatians 3:1. The word is also used to express profound awe and worship, such as in Paul's declaration about the "depth of the riches" of God's wisdom and knowledge Romans 11:33. Additionally, it can mark a moment of personal affirmation, as when Jesus commends a woman by saying, "O woman, great is thy faith" Matthew 15:28. It also functions as a formal address, seen when Luke begins his account to "O Theophilus" Acts 1:1.

Related Words & Concepts

Several words are frequently used in conjunction with G5599 to specify the object of the address or the nature of the exclamation:

  • G444 ánthrōpos (man-faced, i.e. a human being): This is a common term of direct address following the interjection, often to call out an individual for judgment or instruction Romans 2:1.
  • G1074 geneá (a generation; by implication, an age): Often the target of a rebuke introduced by G5599, as when Jesus laments the faithlessness of the generation Matthew 17:17.
  • G453 anóētos (unintelligent; by implication, sensual): This term for 'foolish' is paired with G5599 to express strong correction, such as Paul's address to the foolish Galatians Galatians 3:1 and Jesus's rebuke to his disciples Luke 24:25.
  • G571 ápistos (disbelieving, i.e. without Christian faith): This word often follows the interjection to specify the reason for a rebuke, as when Jesus decries a "faithless generation" Mark 9:19.

Theological Significance

The rhetorical weight of G5599 is significant, turning a simple statement into a powerful confrontation or a profound expression.

  • Direct Confrontation: The interjection is a tool for direct and often sharp confrontation. Paul uses it to challenge a man judging others, "O man, who art thou that repliest against God?" Romans 9:20, and again to condemn Elymas the sorcerer as a child of the devil Acts 13:10.
  • Emotional Emphasis: Its presence amplifies the emotional content of a phrase, demanding the listener's full attention. This is evident in rebukes like "O vain man" James 2:20 and in warnings like "O Timothy, keep that which is committed to thy trust" 1 Timothy 6:20.
  • Expression of Awe: Beyond rebuke, G5599 serves to articulate a sense of wonder that transcends ordinary language. Paul's exclamation "O the depth" captures the overwhelming nature of God's wisdom and judgments Romans 11:33.

Summary

In summary, G5599 is far more than a simple vocative marker. It is a powerful interjection that infuses the text with emotion and gravity. Whether used in sharp rebuke, solemn warning, personal affirmation, or profound worship, its purpose is to signal a moment of heightened importance and direct address. The use of this single word elevates the tone of a passage, demanding that the audience recognize the intensity and significance of the words that follow.

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 interjection across 17 occurrences, inflected in 1 grammatical form — each row is one form, and the bar is how often it is that form.

  • Interjection 17×

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 17 verses across 8 of the 27 books. Most frequent in Acts and Romans (4 verses each); never once in the other 19.

2
Matthew
1
Mark
2
Luke
4
Acts
4
Romans
1
Galatians
2
1 Timothy
1
James

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.