Gregory the Great
Catena Aurea · Johannesevangelium 9
And as Jesus passed by, he saw a man which was blind from his birth. 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. When he had thus spoken, he spat on the ground, and made clay of the spittle, and he anointed the eyes of the blind man with the clay, And said unto him, Go, wash in the pool of Siloam, (which is by interpretation, Sent.) He went his way therefore, and washed, and came seeing. Jesus answered, Neither hath this man sinned, nor his parents.
(in Præf. Moral. c. 5) One stroke falls on the sinner, for punishment only, not conversion; another for correction; another not for correction of past sins, but prevention of future; another neither for correcting past, nor preventing future sins, but by the unexpected deliverance following the blow, to excite more ardent love of the Saviour’s goodness.