In the Genesis record, God said, “Let their be light” (Gen 1:3) and that light appears overcoming the darkness, saturating the creation realm with God’s authority. In Isaiah the Servant of the Lord was promised to be a light both to Israel and to the Nations who were not yet covenanted with God as Israel was,
“I am the Lord, I have called You in righteousness,
I will also hold You by the hand and watch over You,
And I will appoint You as a covenant to the people,
As a light to the nations.” Isaiah 42:6
He says, “It is too small a thing that You should be My Servant
To raise up the tribes of Jacob and to restore the preserved ones of Israel;
I will also make You a light of the nations
So that My salvation may reach to the end of the earth.” Isaiah 49:6
In the Gospel accounts, that Servant of the Lord promised … the Lord Christ is the Redemptive light come to inaugurate a new age, a new realm, and a glorious new day as from the Father of lights (James 1:17). He is the light who enlightens every man (John 1:19) Christ is the new covenant age light that shines in the darkness (John 1:5). The Apostles saw He who was the radiance of the glory of God (Hebrews 1:1) as the glory of the One and only who came from the Father (John 1:1-4). As the age to come Light, the followers of the Lord Christ never walk in darkness (John 8:12). Christ as the Redemptive light of the age to come demonstrated and revealed itself with a white hot intensity at the transfiguration wherein even His clothing became dazzling white (Mark 9:1-4). In the crucifixion He who is “the Light of the World” is snuffed out and as on cue, the light goes out for three hours Christ (Matthew 27:45). Light is picked up again in John’s Revelation wherein John the Revelator falls as dead as before a super nova God-man (Rev. 1:14-17). Finally, as the Scripture started with light, it forms an inclusio by ending with He who is the light, as it closes with the motif of Christ as the light which illuminates the new Jerusalem. He who ever was very light of very light remains the light of the world (Rev. 22:4).