4 Bible Verses about Incredulity

But one of the Twelve, Thomas (called “Twin”), was not with them when Jesus came.

I will put a fleece of wool here on the threshing floor. If dew is only on the fleece, and all the ground is dry, I will know that You will deliver Israel by my strength, as You said.” And that is what happened. When he got up early in the morning, he squeezed the fleece and wrung dew out of it, filling a bowl with water. Gideon then said to God, “Don’t be angry with me; let me speak one more time. Please allow me to make one more test with the fleece. Let it remain dry, and the dew be all over the ground.” read more.
That night God did as Gideon requested: only the fleece was dry, and dew was all over the ground.

They brought the man who used to be blind to the Pharisees. The day that Jesus made the mud and opened his eyes was a Sabbath. So again the Pharisees asked him how he received his sight.

“He put mud on my eyes,” he told them. “I washed and I can see.” read more.
Therefore some of the Pharisees said, “This man is not from God, for He doesn’t keep the Sabbath!” But others were saying, “How can a sinful man perform such signs?” And there was a division among them. Again they asked the blind man, “What do you say about Him, since He opened your eyes?”

“He’s a prophet,” he said. The Jews did not believe this about him—that he was blind and received sight—until they summoned the parents of the one who had received his sight. They asked them, “Is this your son, the one you say was born blind? How then does he now see?” “We know this is our son and that he was born blind,” his parents answered. “But we don’t know how he now sees, and we don’t know who opened his eyes. Ask him; he’s of age. He will speak for himself.” His parents said these things because they were afraid of the Jews, since the Jews had already agreed that if anyone confessed Him as Messiah, he would be banned from the synagogue. This is why his parents said, “He’s of age; ask him.” So a second time they summoned the man who had been blind and told him, “Give glory to God. We know that this man is a sinner!” He answered, “Whether or not He’s a sinner, I don’t know. One thing I do know: I was blind, and now I can see!” Then they asked him, “What did He do to you? How did He open your eyes?” “I already told you,” he said, “and you didn’t listen. Why do you want to hear it again? You don’t want to become His disciples too, do you?” They ridiculed him: “You’re that man’s disciple, but we’re Moses’ disciples. We know that God has spoken to Moses. But this man—we don’t know where He’s from!” “This is an amazing thing,” the man told them. “You don’t know where He is from, yet He opened my eyes! We know that God doesn’t listen to sinners, but if anyone is God-fearing and does His will, He listens to him. Throughout history no one has ever heard of someone opening the eyes of a person born blind. If this man were not from God, He wouldn’t be able to do anything.” “You were born entirely in sin,” they replied, “and are you trying to teach us?” Then they threw him out. When Jesus heard that they had thrown the man out, He found him and asked, “Do you believe in the Son of Man?” “Who is He, Sir, that I may believe in Him?” he asked. Jesus answered, “You have seen Him; in fact, He is the One speaking with you.” “I believe, Lord!” he said, and he worshiped Him. Jesus said, “I came into this world for judgment, in order that those who do not see will see and those who do see will become blind.” Some of the Pharisees who were with Him heard these things and asked Him, “We aren’t blind too, are we?” “If you were blind,” Jesus told them, “you wouldn’t have sin. But now that you say, ‘We see’—your sin remains.

But we would like to hear from you what you think. For concerning this sect, we are aware that it is spoken against everywhere.” After arranging a day with him, many came to him at his lodging. From dawn to dusk he expounded and witnessed about the kingdom of God. He tried to persuade them concerning Jesus from both the Law of Moses and the Prophets. Some were persuaded by what he said, but others did not believe. read more.
Disagreeing among themselves, they began to leave after Paul made one statement: “The Holy Spirit correctly spoke through the prophet Isaiah to your ancestors when He said,

Go to these people and say:
You will listen and listen,
yet never understand;
and you will look and look,
yet never perceive.
For the hearts of these people
have grown callous,
their ears are hard of hearing,
and they have shut their eyes;
otherwise they might see with their eyes
and hear with their ears,
understand with their heart,
and be converted,
and I would heal them. Therefore, let it be known to you that this saving work of God has been sent to the Gentiles; they will listen!” [After he said these things, the Jews departed, while engaging in a prolonged debate among themselves.]