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.
2 Corinthians 1:8-10
For we want you to know, brothers, about the trouble that we experienced in Asia. [See I Cor. 16:19]. We were under a heavy burden [which was] more than we could stand, even to the point of despairing of life.
Hebrews 5:9
and after becoming perfectly [qualified], He became the source of never ending salvation to all those who obey Him.
1 Peter 5:7
Place all your anxious cares upon God [in prayer], because He genuinely cares about you.