Mark 8:21
He asked them, "Do you not yet understand?"
Mark 6:52
for they had not understood about the loaves, but their hearts were hardened.
Psalm 94:8
Consider, you senseless among the people; you fools, when will you be wise?
Matthew 16:11-12
Why is it that you do not understand that I did not speak to you concerning bread? But beware of the yeast of the Pharisees and Sadducees."
Mark 8:12
He sighed deeply in his spirit, and said, "Why does this generation seek a sign? Truly I tell you, no sign will be given to this generation."
Mark 8:17
He, perceiving it, said to them, "Why do you reason that it's because you have no bread? Do you not perceive yet, neither understand? Are your hearts hardened?
Mark 9:19
He answered him, "Unbelieving 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 all this time, and still you do not know me, Philip? He who has seen me has seen the Father. How can you say, 'Show us the Father?'
1 Corinthians 6:5
I say this to move you to shame. Is not there even one wise man among you who would be able to decide between his brothers?
1 Corinthians 15:34
Wake up righteously, and do not sin, for some have no knowledge of God. I say this to your shame.