John 16:33 (NIV)
"I have told you these things, so that in me you may have peace. In this world you will have trouble. But take heart! I have overcome the world."
John 1:5 (NIV)
The light shines in the darkness, but the darkness has not understood it.
John 8:12 (NIV)
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."