[John 9:1-34] sets before us the story of the man born blind, to whom Jesus gives sight. The lengthy account opens with a blind man who begins to see and it closes — and this is curious — with the alleged seers who remain blind in soul. The miracle is narrated by John in just two verses, because the Evangelist does not want to draw attention to the miracle itself, but rather to what follows, to the discussions it arouses, also to the gossip. So many times a good work, a work of charity arouses gossip and discussion, because there are some who do not want to see the truth. The Evangelist John wants to draw attention to something that also occurs in our own day when a good work is performed. The blind man who is healed is first interrogated by the astonished crowd — they saw the miracle and they interrogated him —, then by the doctors of the law who also interrogate his parents. In the end the blind man who was healed attains to faith, and this is the greatest grace that Jesus grants him: not only to see, but also to know Him, to see in Him “the light of the world” (Jn 9:5).

While the blind man gradually draws near to the light, the doctors of the law on the contrary sink deeper and deeper into their inner blindness. Locked in their presumption, they believe that they already have the light, therefore, they do not open themselves to the truth of Jesus. They do everything to deny the evidence. They cast doubt on the identity of the man who was healed, they then deny God’s action in the healing, taking as an excuse that God does not work on the Sabbath; they even doubt that the man was born blind. Their closure to the light becomes aggressive and leads to the expulsion from the temple of the man who was healed.

--Pope Francis, Angelus address, March 30, 2014