9:36. He answered, and said: Who is he, Lord, that I may believe in him?
9:37. And Jesus said to him: Thou hast both seen him; and it is he that talketh with thee.
9:38. And he said: I believe, Lord. And falling down, he adored him.
9:39. And Jesus said: For judgment I am come into this world: that they who see not may see; and they who see may become blind.
I am come, etc.... Not that Christ came for that end, that any one should be made blind: but that the Jews, by the abuse of his coming, and by their not receiving him, brought upon themselves this judgment of blindness.
9:40. And some of the Pharisees, who were with him, heard: and they said unto him: Are we also blind?
9:41. Jesus said to them: If you were blind, you should not have sin: but now you say: We see. Your sin remaineth.
If you were blind, etc.... If you were invincibly ignorant, and had neither read the scriptures, nor seen my miracles, you would not be guilty of the sin of infidelity: but now, as you boast of your knowledge of the scriptures, you are inexcusable.
John Chapter 10
Christ is the door and the good shepherd. He and his Father are one.