John 9:1

And his disciples asked him, saying, Master, who did sin, this man, or his parents, that he was born blind?

Jesus answered, Neither hath this man sinned, nor his parents: but that the works of God should be made manifest in him.

I must work the works of him that sent me, while it is day: the night cometh, when no man can work.

As long as I am in the world, I am the light of the world.