Matthew 21:25-27
What was the source of John’s baptism? Was it from heaven or from men?” They deliberated among themselves and said, “If we say, ‘From heaven,’ He will ask, ‘Why then did you not believe him?’ / But if we say, ‘From men,’ we are afraid of the people, for they all regard John as a prophet.” / So they answered, “We do not know.” And Jesus replied, “Neither will I tell you by what authority I am doing these things.

Mark 11:31-33
They deliberated among themselves what they should answer: “If we say, ‘From heaven,’ He will ask, ‘Why then did you not believe him?’ / But if we say, ‘From men’...” they were afraid of the people, for they all held that John truly was a prophet. / So they answered, “We do not know.” And Jesus replied, “Neither will I tell you by what authority I am doing these things.”

John 8:25-27
“Who are You?” they asked. “Just what I have been telling you from the beginning,” Jesus replied. / “I have much to say about you and much to judge. But the One who sent Me is truthful, and what I have heard from Him, I tell the world.” / They did not understand that He was telling them about the Father.

Matthew 12:38-40
Then some of the scribes and Pharisees said to Him, “Teacher, we want to see a sign from You.” / Jesus replied, “A wicked and adulterous generation demands a sign, but none will be given it except the sign of the prophet Jonah. / For as Jonah was three days and three nights in the belly of the great fish, so the Son of Man will be three days and three nights in the heart of the earth.

John 2:18-22
On account of this, the Jews demanded, “What sign can You show us to prove Your authority to do these things?” / Jesus answered, “Destroy this temple, and in three days I will raise it up again.” / “This temple took forty-six years to build,” the Jews replied, “and You are going to raise it up in three days?” ...

Matthew 16:1-4
Then the Pharisees and Sadducees came and tested Jesus by asking Him to show them a sign from heaven. / But He replied, “When evening comes, you say, ‘The weather will be fair, for the sky is red,’ / and in the morning, ‘Today it will be stormy, for the sky is red and overcast.’ You know how to interpret the appearance of the sky, but not the signs of the times. ...

Mark 8:11-12
Then the Pharisees came and began to argue with Jesus, testing Him by demanding from Him a sign from heaven. / Jesus sighed deeply in His spirit and said, “Why does this generation demand a sign? Truly I tell you, no sign will be given to this generation.”

John 10:24-26
So the Jews gathered around Him and demanded, “How long will You keep us in suspense? If You are the Christ, tell us plainly.” / “I already told you,” Jesus replied, “but you did not believe. The works I do in My Father’s name testify on My behalf. / But because you are not My sheep, you refuse to believe.

Matthew 13:13-15
This is why I speak to them in parables: ‘Though seeing, they do not see; though hearing, they do not hear or understand.’ / In them the prophecy of Isaiah is fulfilled: ‘You will be ever hearing but never understanding; you will be ever seeing but never perceiving. / For this people’s heart has grown callous; they hardly hear with their ears, and they have closed their eyes. Otherwise they might see with their eyes, hear with their ears, understand with their hearts, and turn, and I would heal them.’

Isaiah 6:9-10
And He replied: “Go and tell this people, ‘Be ever hearing, but never understanding; be ever seeing, but never perceiving.’ / Make the hearts of this people calloused; deafen their ears and close their eyes. Otherwise they might see with their eyes, hear with their ears, understand with their hearts, and turn and be healed.”

Jeremiah 5:21
“Hear this, O foolish and senseless people, who have eyes but do not see, who have ears but do not hear.

Ezekiel 12:2
“Son of man, you are living in a rebellious house. They have eyes to see but do not see, and ears to hear but do not hear, for they are a rebellious house.

Psalm 82:5
They do not know or understand; they wander in the darkness; all the foundations of the earth are shaken.

Proverbs 28:5
Evil men do not understand justice, but those who seek the LORD comprehend fully.

Hosea 4:6
My people are destroyed for lack of knowledge. Because you have rejected knowledge, I will also reject you as My priests. Since you have forgotten the law of your God, I will also forget your children.