3 Bible Verses about Incredulity

Now Thomas, one of the twelve, who was called 'the Twin,' was not with them when Jesus came;

They brought him before the Pharisees, this man who had once been blind. Now it was on the sabbath day that Jesus had made clay and opened his eyes. So the Pharisees asked him again how he had regained his sight, and he told them, "He smeared some clay on my eyes, and I washed them, and now I can see."read more.
Then said some of the Pharisees, "This man is not from God, for he does not keep the sabbath"; others said, "How can a sinner perform such Signs?" They were divided on this. So they asked the blind man once more, "What have you to say about him, for opening your eyes?" The man replied, "I say he is a prophet." Now the Jews would not believe he had been born blind and had regained his sight, till they summoned the parents of the man who had regained his sight and asked them, "Is this your son, the son you declare was born blind? How is it that he can see now?" His parents answered, "This is our son, and he was born blind; we know that. But how he can see to-day, we do not know, nor do we know who opened his eyes. Ask himself; he is of age, he can speak for himself." (His parents said this because they were afraid of the Jews; for the Jews had already agreed that anyone who confessed him to be Christ should be excommunicated. That was why the man's parents said, "He is of age, ask himself.") So the man born blind was summoned a second time, and told, "Now give God the praise; this man, we know quite well, is only a sinner." To which he replied, "I do not know whether he is a sinner; one thing I do know, that once I was blind and now I can see." "What did he do to you?" they repeated; "How did he open your eyes?" He retorted, "I have told you that already, and you would not listen to me. Why do you want to hear it over again? Do you want to be disciples of his?" Then they stormed at him: "You are his disciple, we are disciples of Moses! We know God spoke to Moses, but we do not know where this fellow comes from." The man replied to them, "Well, this is astonishing! You do not know where he comes from, and yet he has opened my eyes! God, we know, does not listen to sinners; he listens to anyone who is devout and who obeys his will. It is unheard of, since the world began, that anyone should open a blind man's eyes. If this man were not from God, he could do nothing." They retorted, "And so you would teach us ??you, born in utter depravity!" Then they expelled him. Jesus heard that they had expelled him, and on meeting him he said, "You believe in the Son of man?" "Who is that, sir?" said the man, "tell me, that I may believe in him." "You have seen him," Jesus said, "he is talking to you." He said, "I do believe, Lord" ??and he worshipped him. Then said Jesus, "It is for judgment that I have come into this world, to make the sightless see, to make the seeing blind." On hearing this the Pharisees who were beside him asked, "And are we blind?" Jesus replied, "If you were blind, you would not be guilty; but, as it is, you claim to have sight ??and so your sin remains."

We think it only right to let you tell your own story; but as regards this sect, we are well aware that there are objections to it on all hands." So they fixed a day and came to him at his quarters in large numbers. From morning to evening he explained the Reign of God to them from personal testimony, and tried to convince them about Jesus from the law of Moses and the prophets. Some were convinced by what he said, but the others would not believe.read more.
As they could not agree among themselves, they were turning to go away, when Paul added this one word: "It was an apt word that the holy Spirit spoke by the prophet Isaiah to your fathers, when he said, Go and tell this people, 'You will hear and hear but never understand, you will see and see but never perceive.' For the heart at this people is obtuse, their ears are heavy at hearing, their eyes they have closed, lest they see with their eyes and hear with their ears, lest they understand with their heart and turn again, and I cure them. Be sure of this, then, that this salvation of God has been sent to the Gentiles; they will listen to it." --