John 8:12
When Jesus spoke again to the people, He said, "I am the light of the world. Whoever follows me will never walk in darkness, but will have the light of life."
2 Corinthians 4:6
For God, who said, "Let light shine out of darkness," made his light shine in our hearts to give us the light of the knowledge of the glory of God in the face of Christ.
2 Peter 1:19
And we have the word of the prophets made more certain, and you will do well to pay attention to it, as to a light shining in a dark place, until the day dawns and the morning star rises in your hearts.
All quotes from NIV translation. Original thread here.