Word Study for G4448 (πυρόω) | Strong's Concordance

pyróō /poo-ro'-o/ Ask about this word

Rootfrom πῦρ

Meaningto kindle, i.e. (passively) to be ignited, glow (literally), be refined (by implication), or (figuratively) to be inflamed (with anger, grief, lust)

KJV usageburn, fiery, be on fire, try.

Word Study

In depth

A plain-language study of pyróō — 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 pyróō, represented by G4448, means to kindle or be ignited. Derived from the word for fire, G4442 pŷr, it appears 6 times in 6 unique verses. Its definition encompasses a range of meanings, from the literal glowing of an object and the refining of metal, to the figurative sense of being inflamed with emotions like anger or lust.

Biblical Occurrences & Contextual Analysis

In scripture, G4448 is used to illustrate several distinct concepts. It depicts the intense glory of a divine being, where Christ's feet burned as if in a furnace Revelation 1:15. It also portrays the eschatological destruction of the cosmos, with the heavens being on fire 2 Peter 3:12. Figuratively, it describes spiritual attack as "the fiery darts of the wicked" Ephesians 6:16 and the process of spiritual purification as gold tried in the fire Revelation 3:18. The word is also used to express intense human emotion, such as the apostle's empathetic indignation ("who is offended, and I burn not?") 2 Corinthians 11:29 and the passions that are better fulfilled in marriage than to burn 1 Corinthians 7:9.

Related Words & Concepts

Several related words help clarify the meaning of G4448:

G4442 pŷr ("fire"): As the root word, it provides the core concept of literal or figurative fire, such as the fire of judgment Matthew 5:22 or the fire that tests faith 1 Peter 1:7.
G4570 sbénnymi (to extinguish): This word is used in direct opposition to G4448, as believers are equipped with the shield of faith to quench all the fiery darts of the enemy Ephesians 6:16.
G2741 kausóō (fervent heat): It appears alongside G4448 to describe the end times, when the heavens will be on fire and the elements will melt with fervent heat 2 Peter 3:12.
G5080 tḗkō (to melt): This word describes the result of the intense heat signified by G4448, where the elements will melt on the day of God 2 Peter 3:12.

Theological Significance

The theological weight of G4448 is seen across its various applications.

Divine Judgment and Glory: The word is used to describe both the awesome glory of Christ's appearance Revelation 1:15 and the terrifying power of God's final judgment on creation 2 Peter 3:12.
Spiritual Refinement: It serves as a powerful metaphor for the process of sanctification, where believers' faith is tried like gold to prove its genuineness Revelation 3:18.
Spiritual Warfare: The concept of fiery darts illustrates the intense and destructive nature of spiritual attacks that require faith as a defense Ephesians 6:16.
Human Emotion: The word captures the intensity of human feeling, from righteous anger over sin 2 Corinthians 11:29 to the burning passion that finds its proper place in marriage 1 Corinthians 7:9.

Summary

In summary, G4448 is a potent and multifaceted word. While appearing only a few times, it carries significant meaning, conveying ideas of divine glory, final judgment, spiritual purification, intense emotion, and hostile attack. It demonstrates how the physical reality of fire is used throughout Scripture as a powerful symbol for profound spiritual truths.

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 verb across 6 occurrences, inflected in 6 grammatical forms — each row is one form, and the bar is how often it is that form.

Perfect Passive Participle Accusative Plural Neuter 1×
Perfect Passive Participle Accusative Singular Neuter 1×
Perfect Passive Participle Genitive Singular Feminine 1×
Present Passive Indicative 1st Singular 1×
Present Passive Infinitive 1×
Present Passive Participle Nominative Plural Masculine 1×

Nominative: The subject of the verb.
Genitive: Possession or source — often "of".
Accusative: The direct object of the verb.
Singular: One.
Plural: More than one.
Masculine: Masculine grammatical gender.
Feminine: Feminine grammatical gender.
Neuter: Neuter grammatical gender.
1st: First person — the speaker ("I"/"we").
Present: Action in progress or repeated — happening now or continually.
Perfect: A completed act whose results continue.
Passive: The subject is acted upon.
Indicative: A plain statement of fact.
Infinitive: The verb as a noun — "to do".
Participle: A verbal adjective — describes while carrying the verb's action.

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 6 verses across 5 of the 27 books. Most frequent in Revelation (2 verses); never once in the other 22.

1 Corinthians

2 Corinthians

Ephesians

2 Peter

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.