3 Bible Verses about Incredulity

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

They brought to the Pharisees the man who had formerly been blind. Now it was a Sabbath day when Jesus made the clay and opened his eyes. Then the Pharisees also asked him again how he had received his sight. He said to them, "He put clay on my eyes, and I washed, and I see."read more.
Some of the Pharisees said, "This man is not from God, for he does not keep the Sabbath." But others said, "How can a man who is a sinner do such signs?" And there was a division among them. So they again said to the blind man, "What do you say about him, since he has opened your eyes?" He said, "He is a prophet." The Jews did not believe that he had been blind, and had received his sight, until they called the parents of the man who had received his sight. And they asked them, "Is this your son, who you say was born blind? How then does he now see?" His parents answered, "We know that this is our son, and that he was born blind; but how he now sees we do not know, nor do we know who opened his eyes. Ask him. He is of age; he will speak for himself." His parents said this because they feared the Jews, for the Jews had agreed already that if anyone confessed that he was Christ, he would be put out of the synagogue. Therefore his parents said, "He is of age; ask him." So for the second time they called the man who had been blind, and said to him, "Give God the glory; we know that this man is a sinner." He answered, "Whether he is a sinner or not, I do not know. One thing I know, that though I was blind, now I see." Then they said to him, "What did he do to you? How did he open your eyes?" He answered them, "I have told you already and you did not listen. Why do you want to hear it again? Do you want to become his disciples, too?" Then they reviled him and said, "You are his disciple, but we are disciples of Moses. We know that God spoke to Moses, but as for this fellow, we do not know where he comes from." The man answered, "Why, this is a marvel! You do not know where he comes from, and yet he opened my eyes. We know that God does not listen to sinners, but if any one is a worshiper of God and does his will, he listens to him. Never since the world began has it been heard that anyone opened the eyes of a man born blind. If this man were not from God, he could do nothing." They answered him, "You were born in utter sin, and are you teaching us?" And they cast him out. Jesus heard that they had cast him out, and when he found him, he said, "Do you believe in the Son of Man?" He answered, "Who is he, sir, that I may believe in him?" Jesus said to him, "You have seen him, and it is he who speaks with you." Then he said, "Lord, I believe!" And he worshiped him. Jesus said, "For judgment I have come into this world, that those who do not see may see, and that those who see may become blind." Then some of the Pharisees who were with him heard this, and said to him, "Are we blind also?" Jesus said to them, "If you were blind, you would have no guilt; but now that you say, 'We see,' your sin remains.

But we desire to hear from you what your views are; for concerning this sect, we know that everywhere it is spoken against." When they had appointed a day for Paul, they came to him at his lodging in great numbers. And he explained the matter to them from morning till evening, testifying to the kingdom of God and trying to convince them about Jesus both from the law of Moses and from the prophets. Some were convinced by what he said, but others would not believe.read more.
When they disagreed among themselves, they began to leave, after Paul had made one final statement: "The Holy Spirit spoke the truth to your fathers through Isaiah the prophet: saying, 'Go to this people and say, "you will be ever hearing, but will never understand; and you will be ever seeing, but will never perceive. For this people's heart has become dull, and with their ears they scarcely hear, and their eyes they have closed; otherwise they might see with their eyes, and hear with their ears, and understand with their heart and turn, and I would heal them."' Therefore let it be known to you that this salvation of God has been sent to the Gentiles; they will listen." (...)