Mark 8:21
And he said unto them, How is it that ye do not yet understand?
Mark 6:52
For they had not yet derived understanding in the loaves, for their hearts were blind.
Psalm 94:8
Understand, ye carnal ones among the people, and, ye fools, when will ye be wise?
Matthew 16:11-12
How is it that ye do not understand that I did not speak to you concerning bread that ye should keep yourselves from the leaven of the Pharisees and of the Sadducees?
Mark 8:12
And crying out in his spirit, he said, Why does this generation seek after a sign? verily I say unto you, There shall no sign be given unto this generation.
Mark 8:17
And as Jesus understood it, he said unto them, Why argue ye because ye have no bread? Do ye not consider nor understand? is your heart yet blind?
Mark 9:19
Answering, he said unto him, O unfaithful generation, how long shall I be with you? How long must I suffer you? Bring him unto me.
John 14:9
Jesus said unto him, Have I been such a long time with you, and yet thou hast not known me, Philip? He that has seen me has seen the Father; and how sayest thou then, Show us the Father?
1 Corinthians 6:5
I speak to your shame. Is it so, that there is not a wise man among you? no, not one that shall be able to judge between his brothers?
1 Corinthians 15:34
Watch diligently, and sin not; for some do not know God: I speak this to your shame.