1 Enoch 14:20
17 And I looked and saw therein a lofty throne: its appearance was as crystal, and the wheels thereof as the shining sun, and there was the vision of cherubim. 18 And from underneath the throne came streams of flaming fire so that I could not look upon it. 19 And the Great Glory sat on it, and His garment shone more brightly than the sun and was whiter than any snow. 20 None of the angels could enter and could behold His face because of the magnificence and glory and no flesh could behold Him. 21 The flaming fire was all around Him, and a great fire stood before Him, and no one around could draw near Him: ten thousand times ten thousand stood before Him, yet He needed no counselor. 22 And the most holy ones who were near to Him did not leave by night nor depart from Him.
1 Timothy 6:16
12 Compete well for the faith and lay hold of that eternal life you were called for and made your good confession for in the presence of many witnesses. 13 I charge you before God who gives life to all things and Christ Jesus who made his good confession before Pontius Pilate, 14 to obey this command without fault or failure until the appearing of our Lord Jesus Christ 15 —whose appearing the blessed and only Sovereign, the King of kings and Lord of lords, will reveal at the right time. 16 He alone possesses immortality and lives in unapproachable light, whom no human has ever seen or is able to see. To him be honor and eternal power! Amen.
Notes and References
"... Isaiah’s vision of the final triumph of goodness includes the assertion that “the Lord will be your everlasting light” (Isiah 60:19, 20). The most succinct statement is found in 1 John 1:5: “God is light and in him is no darkness at all” (RSV). James speaks of God as “the Father of lights” (James 1:17). Elsewhere God is simply associated with light as an image of divine glory: he covers himself “with light as with a garment” (Psalm 104:2); “his brightness was like the light” (Habakkuk 3:4); “the light dwells with him” (Daniel 2:22). Ezekiel’s vision of the divine chariot (Ezekiel 1) is a riot of brightness, flashing fire, shining jewels and gleaming metals. By extension, God who is light inhabits a heaven bathed in light. Here light becomes the preeminent symbol for transcendence, dear to the mystics’ and poets’ expressions through the ages. The classic passage is 1 Timothy 6:16, which speaks of God as the one “who alone has immortality and dwells in unapproachable light”. Colossians 1:12 speaks of the believer’s being qualified “to share in the inheritance of the saints in light”. As a symbol for God, light takes the more specific form of representing the Messiah ..."
Ryken, Leland Dictionary of Biblical Imagery (p. 1732) InterVarsity Press, 1998