John 11:9-10
Jesus answered, "Are there not twelve hours in the day? If anyone walks in the day, he does not stumble, because he sees the light of this world.
John 12:35
Then Jesus said to them, "A little while longer the light is with you. Walk while you have the light, lest the darkness overtake you; he who walks in the darkness does not know where he is going.
John 12:40
"He has blinded their eyes and hardened their hearts, lest they should see with their eyes, and understand with their hearts and turn, so that I should heal them."
1 John 2:11
But he who hates his brother is in the darkness and walks in the darkness, and does not know where he is going, because the darkness has blinded his eyes.