4 Bible Verses about Incredulity

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

Behold me putting a fleece of wool in the threshing-floor, and if the dew shall be upon the fleece only, and upon all the earth dryness, and I knew that thou wilt save Israel by my hand. as thou spakest And it will be so: and he will rise early upon the morrow, and he will press the fleece together, and the dew will press out from the fleece, a bowl full of water. And Gideon will say to God, Thine anger will not kindle against me, and I will speak but this once: I will try now only this once upon the fleece; there shall be dryness to the fleece alone, and upon all the earth shall be dew.read more.
And God will do so in that night: and there will be dryness to the fleece only, and upon all the earth was dew.

They bring him to the Pharisees, him once blind. And it was the sabbath, when Jesus made clay, and opened his eyes. Then again the Pharisees also asked him how he saw again. He said to them, He put clay upon mine eyes, and I washed, and I see.read more.
Then said certain of the Pharisees, This man is not from God, for he keeps not the sabbath. Others said, How can a sinful man do such signs? And a division was among them. They say to the blind again, What sayest thou of him, for he opened thine eyes? He said, That he is a prophet. Then the Jews believed not of him that he was blind, and saw again, until they called the parents of him having looked up. And they asked them, saying, Is this your son, whom ye say that be was born blind how then does be now see His parents answered them and said, We know that this is our son, and that he was born blind: But how he now sees, we know not; or who opened his eyes, we know not: he has age; ask him: he shall speak for himself. These said his parents, for they feared the Jews: for already had the Jews agreed, that if any should acknowledge him Christ, he should be put out of the synagogue. Therefore said his parents, That he has age; ask him. Then called they the man of a second time, who was blind, and said to him, Give glory to God: we know that this man is sinful. He answered and said, If he be sinful, I know not: one thing I know, that, being blind, now I see. And again said they to him, What did he to thee? how opened he thine eyes? He answered them, I told you already, and ye heard not: why wish ye to hear again? ye wish not also to be his disciples? Then they reviled him, and said, Thou art his disciple; but we are Moses' disciples. We know that God has spoken to Moses; but this, we know not whence he is. The man answered and said to them, For in this is it wonderful, that ye know not whence he is, and he opened mine eyes. And we know that God hears not the sinful: but if any be godly, and do his will, this he hears. From forever was it not heard that any opened the eyes of him born blind. If this one were not of God, he could do nothing. They answered and said to him, In sins wert thou wholly born, and teachest thou us? And they cast him without. Jesus heard that they cast him without; and having found him, said to him, Believest thou in the Son of God? He answered and said, Who is he, Lord, that I might believe in him? And Jesus said to him, Thou hast also seen him, and he speaking with thee, the same is he. And he said I believe, Lord. And he worshipped him. And Jesus said, For judgment came I into this world, that they not seeing might see; and they seeing might be blind. And they being with him of the Pharisees heard these things, and said to him, We are not also blind? Jesus said to them If ye were blind, ye had not sinned: and now ye say, That we see; therefore your sin remains.

And we desire to hear from thee what thou thinkest: for truly of this sect it is known to us that it is everywhere spoken against. And having appointed him a day, many came to him to the lodging; to whom testifying, he set forth the kingdom of God, and persuading them concerning Jesus, both from the law of Moses, and the prophets, from morn to eve. And some truly were persuaded by things spoken, and some disbelieved.read more.
And being at variance with one another, they were let go, Paul having said one word, That well spake the Holy Spirit by Esaias the prophet to our fathers, Saying, Go to this people, and say, By hearing ye shall hear, and not understand; and seeing ye shall see, and ye should not perceive: For the heart of this people was thickened, and with ears heard they heavily, and their eyes they closed; lest they should see with the eyes, and with ears should hear, and with the heart they should understand, and turn back, and I should heal them. Be it known to you therefore, that salvation of God was sent to the nations, and they shall hear. And he having said these things, the Jews departed, having much discussion in themselves.