Mark 8:21
And he said to them, Do you not yet understand?
Mark 6:52
for they understood not concerning the bread, for their heart was hardened.
Matthew 16:11-12
Why do you not understand that I spoke to you not of bread, to beware of the leaven of the Pharisees and Sadducees?
Mark 8:12
And groaning in his spirit, he said, Why does this generation seek a sign? I tell you truly, there shall no sign be given to this generation.
Mark 8:17
And Jesus knowing it, said to them, Why do you reason because you have no bread? Do you not yet perceive nor understand? Is your heart hardened?
Mark 9:19
And he answered and said to them, O faithless and perverse generation! How long shall I be with you? How long shall I suffer you? Bring him to me.
John 14:9
Jesus said to him, Have I been so long a time with you and have you not known me, Philip? He that has seen me has seen the Father; and how say you, Show us the Father?
1 Corinthians 6:5
I speak to your shame. Is there not now a wise man among you? not one who can judge between his brothers?
1 Corinthians 15:34
Awake to righteousness and sin not; for some have not a knowledge of God. I speak to your shame.