Mark 8:21
He said to them, "How is it that you do not understand?"
Mark 6:52
for they did not understand the lesson of the loaves; their minds were dull.
Matthew 16:11-12
How is it that you do not understand that I did not speak to you about bread, when I said, keep on guarding yourselves against the yeast of the Pharisees and the Sadducees?"
Mark 8:12
But He sighed in spirit and said, "Why do the people of these times ask for a spectacular sign? I solemnly say, no sign at all will be given them."
Mark 8:17
And as He noticed it He said to them, "Why are you discussing the fact that you have no bread? Do you not yet know nor understand? Are your minds so dull?
Mark 9:19
He answered them, "Oh, you unbelieving people of the times! How long must I be with you! How long must I put up with you! Bring him to me."
John 14:9
Jesus said to him, "Have I been with you disciples so long, and yet you, Philip, have not recognized me? Whoever has seen me has seen the Father. How can you say, 'Let us see the Father'?
1 Corinthians 6:5
I ask this to make you blush with shame. Has it come to this, that there is not a single wise man among you who could settle a grievance of one brother against another,
1 Corinthians 15:34
Sober up, as is right, and stop sinning, for some of you -- to your shame I say so -- are without any true knowledge of God.