Mark 8:21
And He said to them, How do you not understand?
Mark 6:52
For they did not understand the miracle of the loaves, for their hearts were hardened.
Psalm 94:8
Understand, you beastly ones among the people; and fools, when will you be wise?
Matthew 16:11-12
How is it that you do not understand that I did not speak to you about loaves, but to beware of the leaven of the Pharisees and of the Sadducees?
Mark 8:12
And He sighed deeply in His spirit and said, Why does this generation seek a sign? Truly I say to you, There shall no sign be given to this generation.
Mark 8:17
And knowing it, Jesus said to them, Why do you reason that it is because you have no loaves? Do you not yet perceive nor understand? Have you still hardened your heart?
Mark 9:19
He answered him and said, O faithless generation, how long shall I be with you? How long shall I bear with you? Bring him to Me!
John 14:9
Jesus said to him, Have I been with you such a long time and yet you have not known Me, Philip? He who has seen Me has seen the Father. And how do you say, Show us the Father?
1 Corinthians 6:5
For I speak to your shame. Is it so that there is not a wise one among you, not even one in your midst who shall be able to judge between his brother?
1 Corinthians 15:34
Be righteously awake, and sin not; for some have ignorance of God. I speak this to your shame.