ἀστράπτω

I flash, am lustrous

Definition

The verb ἀστράπτω means to flash, gleam, or shine brilliantly, often with a sudden, intense light. In the New Testament, it is used both for the literal flashing of lightning (Luke 17:24) and for the radiant, gleaming appearance of angelic garments (Luke 24:4). The core sense is a vivid, dazzling emission of light, distinct from a steady glow. It conveys a sense of suddenness and overwhelming brightness that captures immediate attention.

Biblical Usage

This word is used only twice in the New Testament, both in the Gospel of Luke. In Luke 17:24, it describes the visible, sudden, and unmistakable flash of lightning that accompanies the coming of the Son of Man, emphasizing the universal visibility and dramatic nature of that event. In Luke 24:4, it describes the dazzling, gleaming appearance of the angels' clothing at the empty tomb, highlighting their supernatural and glorious nature in contrast to the mundane.

Etymology

Derived from the root *στραπ- (strap-), related to flashing or turning. It is cognate with ἀστεροπή (asteropē, G796), meaning 'lightning flash.' The meaning developed from a general sense of a sudden, bright gleam to its specific biblical uses for lightning and supernatural radiance.

Semantic Range

ἀστράπτω is theologically significant as it connects divine revelation and glory with overwhelming, visible brilliance. In Luke 17:24, the lightning flash symbolizes the unmistakable, universal, and sudden manifestation of Christ's return, a core eschatological event. In Luke 24:4, the gleaming garments signify the heavenly, glorious reality breaking into the human realm at the resurrection, affirming the supernatural victory over death. Understanding this Greek term enriches reading by emphasizing the shocking, attention-commanding nature of divine intervention.

In the ancient Greco-Roman world, lightning was often viewed as a sign or weapon of the gods (e.g., Zeus/Jupiter). For Luke's audience, the imagery of a lightning flash would immediately communicate power, divine activity, and a phenomenon that is both awe-inspiring and beyond human control. The gleaming of angelic garments aligns with cultural associations of radiant light with divinity, purity, and the celestial realm.

λάμπω (lampō, G2989) — to shine, give light, often with a sense of steady radiance or illumination. ἀστραπή (astrapē, G796) — a lightning flash (noun), the phenomenon itself, closely related but a different part of speech.

Word Details

Scripture References