John 8:12
So, Jesus spoke to them again [i.e., to the Jewish authorities. See 7:45], saying, "I am the light of the world. The person who becomes my follower will never live in [spiritual] darkness, but have the light of [i.e., for his] life [i.e., followers of Jesus will not live in error and sin but in truth and righteousness]."
John 12:46
I have come into the world to be a light [to it], so that whoever believes in me would not have to remain in [spiritual] darkness.
Ephesians 5:8
for you people were once darkness [i.e., when living in sin], but now you are light in [fellowship with] the Lord. [So], live like people who belong to light [i.e., who live godly lives],
Ephesians 5:14
So, it says, "You who are asleep, wake up and rise from the dead, and Christ will shine on you [i.e., illuminate you]." [Note: The foregoing words may have been an early saying, used at someone's immersion, which included the ideas of "rising up" (See Col. 2:12) and "illumination" (See Heb. 6:4)].