541. apaugasma
Lexical Summary
apaugasma: Radiance, reflection, brightness

Original Word: ἀπαύγασμα
Part of Speech: Noun, Neuter
Transliteration: apaugasma
Pronunciation: ä-pä'-ü-gäs-mä
Phonetic Spelling: (ap-ow'-gas-mah)
KJV: brightness
NASB: radiance
Word Origin: [from a compound of G575 (ἀπό - since) and G826 (αὐγάζω - see)]

1. an off-flash, i.e. effulgence

Strong's Exhaustive Concordance
brightness, radiance

From a compound of apo and augazo; an off-flash, i.e. Effulgence -- brightness.

see GREEK apo

see GREEK augazo

HELPS Word-studies

541 apaúgasma (from 575 /apó, "from" which intensifies 826 /augázō, "shine," derived from augē/"dawn") – properly, someone who literally "shines," (is radiant). 541 (apaúgasma) is only used in Heb 1:3 where it refers to Christ's eternal radiancesupremely reflecting the effulgent glory of the Godhead. His eternal light breaks through all the darkness that keeps someone in spiritual ignorance (bondage), i.e. every resistance exerted by sin.

NAS Exhaustive Concordance
Word Origin
from apo and augé
Definition
radiance
NASB Translation
radiance (1).

Thayer's Greek Lexicon
STRONGS NT 541: ἀπαύγασμα

ἀπαύγασμα, ἀπαυγαστος, τό (from ἀπαυγάζω to emit brightness, and this from αὐγή brightness; cf. ἀποσκίασμα, ἀπείκασμα, ἀπεικονισμα, ἀπηχημα), reflected brightness: Christ is called in Hebrews 1:3 ἀπαύγασμα τῆς δόξης ... τοῦ Θεοῦ, inasmuch as he perfectly reflects the majesty of God; so that the same thing is declared here of Christ metaphysically, which he says of himself in an ethical sense in John 12:45 (): θεωρῶν ἐμέ θεωρεῖ τόν πέμψαντά με. (Wis. 7:26; Philo, mund. opif. § 51; plant. Noë § 12; de concup. § 11; and often in ecclesiastical writings; see more fully in Grimm on Sap., the passage cited, p. 161f) (Some interpreters still adhere to the significant effulgence or radiance (as distinguished from refulgence or reflection), see Kurtz at the passage; Sophocles Lexicon, under the word; Cremer, under the word.)

Topical Lexicon
Meaning and Imagery

The term depicts the bursting forth of light from a source—an effulgence that is both native to the source and perceptible to observers. The picture is not of a secondary glow but of the radiant outshining that reveals the very essence of the light-giver. In Scripture this imagery stresses that what is seen in the Son is nothing less than the intrinsic glory of the Father made visible.

Occurrence in the New Testament

Hebrews 1:3 alone employs the word: “The Son is the radiance of God’s glory and the exact representation of His nature, upholding all things by His powerful word”. The unique placement at the outset of Hebrews sets the interpretive key for the entire epistle: the Messiah’s superiority is grounded in His full participation in divine glory.

Christological Significance

1. Equality with the Father: The Son does not merely reflect divine glory; He manifests it. Thus the passage safeguards both the unity and distinction within the Godhead.
2. Revelation: Just as sunlight reveals the sun, the incarnate Christ reveals the Father (John 14:9). Hebrews therefore anchors all subsequent revelation, priesthood, and covenant superiority in this radiant identity.
3. Incarnation: The effulgence language maintains that in becoming man the Son did not cease to be the outshining of deity; rather, He localized that glory in redeeming humility (John 1:14).

Theological Implications

• Supreme Revelation: The finality of God’s speech in the Son (Hebrews 1:1-2) rests on His radiance. No further mediator can supersede Him.
• Sustaining Power: The verse ties the radiance to cosmic preservation—“upholding all things.” Divine glory is not static but active in providence.
• Redemptive Purification: The same verse immediately joins glory to atonement (“after He had provided purification for sins”), uniting majesty and mercy.

Connections with Old Testament Revelation

• Shekinah Glory: The cloud that filled the tabernacle (Exodus 40:34-35) is a historical backdrop; Christ embodies what was once veiled.
• Moses’ Shining Face (Exodus 34:29-35): Moses reflects; Christ radiates.
Psalm 104:2; Malachi 4:2: Divine light imagery finds its ultimate fulfillment in the person of the Son.
• Wisdom Personified (Proverbs 8:22-31): Early Jewish exegesis linked Wisdom’s emanation to the creative word; Hebrews affirms that Wisdom is the incarnate Son.

Historical Usage in Patristic Writings

Athanasius cited Hebrews 1:3 to argue that the Son is homoousios (of one essence) with the Father: the light produced is identical in nature to its source. Basil of Caesarea employed the same metaphor against Eunomian subordinationism. John Chrysostom preached that as radiance is inseparable from light, so the Son is eternally begotten, not made. The Nicene Creed’s phrase “Light from Light” reflects this exegesis.

Practical Application for Ministry and Discipleship

1. Transformational Gaze: “We all, who with unveiled faces contemplate the Lord’s glory, are being transformed into His image” (2 Corinthians 3:18). Continual beholding leads to progressive likeness.
2. Evangelism: Proclaiming Christ is presenting divine glory to a darkened world (2 Corinthians 4:6).
3. Holiness: Believers are called to “shine like stars in the world” (Philippians 2:15), a derivative radiance grounded in union with Him.
4. Pastoral Comfort: The sustaining word that upholds the universe likewise secures the believer’s perseverance.

Worship and Devotional Reflection

Hymns such as “Fairest Lord Jesus” celebrate Christ as “brightness of the Father’s glory.” In corporate worship, Hebrews 1:3 invites adoration that is simultaneously Christ-centered and God-exalting. Personal devotion benefits from contemplating the radiant Son in the Gospels, allowing His glory to dispel fear and kindle hope (Revelation 1:16).

Summary

The lone New Testament usage encapsulates the heart of biblical Christology: the incarnate Son is the radiant, self-revealing glory of the eternal God. This truth fuels doctrine, shapes worship, and energizes mission as the church reflects His light in the world.

Forms and Transliterations
απαυγασμα απαύγασμα ἀπαύγασμα apaugasma apaúgasma
Links
Interlinear GreekInterlinear HebrewStrong's NumbersEnglishman's Greek ConcordanceEnglishman's Hebrew ConcordanceParallel Texts
Englishman's Concordance
Hebrews 1:3 N-NNS
GRK: ὃς ὢν ἀπαύγασμα τῆς δόξης
NAS: And He is the radiance of His glory
KJV: being the brightness of [his] glory,
INT: who being [the] radiance of the glory

Strong's Greek 541
1 Occurrence


ἀπαύγασμα — 1 Occ.

540
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