"bright" (from phos, "light"), is said of a cloud, Matthew 17:5; metaphorically of the body, Matthew 6:22 , "full of light;" Luke 11:34,36 . See LIGHT.

A — 2: λαμπρός

(Strong's #2986 — Adjective — lampros — lam-pros' )

"shining, brilliant, bright," is used of the clothing of an angel, Acts 10:30; Revelation 15:6; symbolically, of the clothing of the saints in glory, Revelation 19:8 , RV, in the best texts (AV, "white"); of Christ as the Morning Star, Revelation 22:16; of the water of life, Revelation 22:1 , AV, "clear." See CLEAR , GAY , GOODLY , GORGEOUS , WHITE.

Note: Cp. lampros, "sumptuously," Luke 16:19 .

B — 1: λαμπρότης

(Strong's #2987 — Noun Feminine — lamprotes — lam-prot'-ace )

"brightness," akin to A, No. 2, above, is found in Acts 26:13 .

B — 2: ἀπαύγασμα

(Strong's #541 — Noun Neuter — apaugasma — ap-ow'-gas-mah )

"a shining forth" (apo, "from," auge, "brightness"), of a light coming from a luminous body, is said of Christ in Hebrews 1:3 , AV, "brightness," RV, "effulgence," i.e., shining forth (a more probable meaning than reflected brightness).

Note: Epiphaneia, lit., "shining forth or upon," is rendered "brightness" in the AV of 2 Thessalonians 2:8; RV, "manifestation." See APPEARING.

Bibliography Information
Vines, W. E., M. A. Entry for 'Bright, Brightness'. Vine's Expository Dictionary of NT Words. https://www.studylight.org/dictionaries/eng/ved/b/bright-brightness.html. 1940.

Bible Dictionaries Bright, Brightness

Vine's Expository Dictionary of NT Words

Bible Dictionaries
Bright, Brightness