Mark 8:21
"Do you not yet understand?" he said.
Mark 6:52
for they had not understood about the loaves; on the contrary their heart was hardened.
Matthew 16:11-12
"How is it that you do not perceive that I did not speak to you concerning bread? But beware off the leaven of the Pharisees and Sadducees!"
Mark 8:12
At this Jesus sighed deeply in his spirit, and said: "Why does the present generation seek a sign? In solemn truth I tell you that no sign shall be given this generation."
Mark 8:17
"Why are you arguing together because you have no bread? Do you not yet perceive and understand?
Mark 9:19
"O unbelieving generation!" replied Jesus; "how long must I be with you? How long must I be patient with you? Bring him to me."
John 14:9
"Have I been so long among you, and yet you, Philip, have you not recognized me? He who has seen me has seen the Father. How can you say, 'Cause us to see the Father'?
1 Corinthians 6:5
I say this to shame you. Is it so that there is not among you a single wise man, capable of deciding between a man and his brother?
1 Corinthians 15:34
Wake up, do justly, cease from sin; for I say to your shame that some of you have no acquaintance with God.