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G4015

περιαστράπτω

periastráptō /per-ee-as-trap'-to/ Ask about this word
from περί and ἀστράπτω
to flash all around, i.e. envelop in light
shine round (about).

Word Study

In depth

A plain-language study of periastráptō — 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 periastráptō, represented by G4015, describes an intense, encompassing light. Its definition, "to flash all around, i.e. envelop in light," is derived from its components περί and ἀστράπτω. This specific verb appears 3 times across 2 unique verses, highlighting its use in describing a singular, powerful type of event.

Biblical Occurrences & Contextual Analysis

In the biblical narrative, G4015 is used exclusively to describe the pivotal moment on the road to Damascus. As a man journeyed, "suddenly there shined round about him a light from heaven" Acts 9:3. In a later retelling of the event, the speaker recounts, "suddenly there shone from heaven a great light round about me" Acts 22:6. The word is used to convey the sudden, overwhelming, and completely surrounding nature of this divine manifestation.

Related Words & Concepts

The meaning of G4015 is clarified by the words used in conjunction with it:

  • G5457 phōs (light): Defined as "luminousness (in the widest application, natural or artificial, abstract or concrete, literal or figurative):--fire, light." This is the substance that envelops the individual.
  • G3772 ouranós (heaven): Defined as "the sky; by extension, heaven (as the abode of God); by implication, happiness, power, eternity; specially, the Gospel (Christianity):--air, heaven(-ly), sky." This identifies the origin of the light, marking it as a celestial or divine event.

Theological Significance

The theological weight of G4015 is tied directly to the source and nature of the light it describes.

  • Divine Origin: The light originates from G3772 heaven, which is described as the "abode of God" (Acts 9:3, Acts 22:6). This establishes the event as a direct intervention from a divine source, not a natural phenomenon.
  • Transformative Revelation: This light is a catalyst for turning "from darkness to light" and from the power of Satan to God Acts 26:18. It is presented as a "marvellous light" that calls people out of darkness 1 Peter 2:9.
  • Embodiment of the Divine: The light, G5457 phōs, is theologically significant, as God is called the "Father of lights" James 1:17 and Jesus identifies himself as "the light of the world" John 8:12. The light that shines round about is therefore a manifestation of God's own presence and power.

Summary

In summary, G4015 is a precise and potent verb reserved for a moment of profound divine encounter. It does not simply mean "to shine," but "to flash all around," emphasizing an enveloping and inescapable experience. Its biblical usage, always connected with G5457 light from G3772 heaven, locks its meaning into the context of a life-altering, divine revelation that transforms an individual's path.

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

  • Aorist Active Indicative 3rd Singular
  • Aorist Active Infinitive
Singular
One.
3rd
Third person — the one spoken about ("he"/"they").
Aorist
Action viewed as a single whole — usually a simple past event.
Active
The subject performs the action.
Indicative
A plain statement of fact.
Infinitive
The verb as a noun — "to do".

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

2 verses, all in Acts — and none of the other 26 New Testament books.

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.