4 Bible Verses about Incredulity

But Thomas, one of the twelve, called Didymus, was not with them when Jesus came.

Behold, I will put a fleece of wool in the floor; and if the dew be on the fleece only, and it be dry upon all the earth beside it, then shall I know that you will save Israel by my hand, as you have said. And it was so: for he rose up early the next day, and squeezed the fleece together, and wrung the dew out of the fleece, a bowl full of water. And Gideon said unto God, Let not your anger be hot against me, and I will speak but this once: let me test, I pray you, but this once with the fleece; let it now be dry only upon the fleece, and upon all the ground let there be dew.read more.
And God did so that night: for it was dry upon the fleece only, and there was dew on all the ground.

They brought to the Pharisees him that formerly was blind. And it was the sabbath day when Jesus made the clay, and opened his eyes. Then again the Pharisees asked him how he had received his sight. He said unto them, He put clay upon my eyes, and I washed, and do see.read more.
Therefore said some of the Pharisees, This man is not of God, because he keeps not the sabbath day. Others said, How can a man that is a sinner do such miracles? And there was a division among them. They said unto the blind man again, What say you of him, that he has opened your eyes? He said, He is a prophet. But the Jews did not believe concerning him, that he had been blind, and received his sight, until they called the parents of him that had received his sight. And they asked them, saying, Is this your son, who you say was born blind? how then does he now see? His parents answered them and said, We know that this is our son, and that he was born blind: But by what means he now sees, we know not; or who has opened his eyes, we know not: he is of age; ask him: he shall speak for himself. These words spoke his parents, because they feared the Jews: for the Jews had agreed already, that if any man did confess that he was Christ, he should be put out of the synagogue. Therefore said his parents, He is of age; ask him. Then again called they the man that was blind, and said unto him, Give God the praise: we know that this man is a sinner. He answered and said, Whether he be a sinner or not, I know not: one thing I know, that, though I was blind, now I see. Then said they to him again, What did he to you? how opened he your eyes? He answered them, I have told you already, and you did not hear: why would you hear it again? will you also be his disciples? Then they reviled him, and said, You are his disciple; but we are Moses' disciples. We know that God spoke unto Moses: as for this fellow, we know not from where he is. The man answered and said unto them, Why, in this is a marvelous thing, that you know not from where he is, and yet he has opened my eyes. Now we know that God hears not sinners: but if any man be a worshiper of God, and does his will, him he hears. Since the world began was it not heard that any man opened the eyes of one that was born blind. If this man were not of God, he could do nothing. They answered and said unto him, You were altogether born in sins, and do you teach us? And they cast him out. Jesus heard that they had cast him out; and when he had found him, he said unto him, Do you believe on the Son of God? He answered and said, Who is he, Lord, that I might believe on him? And Jesus said unto him, You have both seen him, and it is he that talks with you. And he said, Lord, I believe. And he worshiped him. And Jesus said, For judgment I am come into this world, that they who see not might see; and that they who see might be made blind. And some of the Pharisees who were with him heard these words, and said unto him, Are we blind also? Jesus said unto them, If you were blind, you should have no sin: but now you say, We see; therefore your sin remains.

But we desire to hear of you what you think: for as concerning this sect, we know that everywhere it is spoken against. And when they had appointed him a day, there came many to him into his lodging; to whom he expounded and testified of the kingdom of God, persuading them concerning Jesus, both out of the law of Moses, and out of the prophets, from morning till evening. And some believed the things which were spoken, and some believed not.read more.
And when they agreed not among themselves, they departed, after Paul had spoken one word, Well spoke the Holy Spirit by Isaiah the prophet unto our fathers, Saying, Go unto this people, and say, Hearing you shall hear, and shall not understand; and seeing you shall see, and not perceive: For the heart of this people is stubborn, and their ears are dull of hearing, and their eyes have they closed; lest they should see with their eyes, and hear with their ears, and understand with their heart, and should be converted, and I should heal them. Be it known therefore unto you, that the salvation of God is sent unto the Gentiles, and that they will hear it. And when he had said these words, the Jews departed, and had much dispute among themselves.