Mark 8:21
And He said unto them, How is it then that ye do not understand?
Mark 6:52
for their heart was stupified.
Matthew 16:11-12
How is it then that ye do not understand that I did not speak to you concerning bread, when I bid you to beware of the leaven of the pharisees and of the sadducees?
Mark 8:12
And He sighing deeply in his spirit, saith, Why doth this generation require a sign? Verily I tell you, There shall no sign be given to this generation.
Mark 8:17
And Jesus knowing it saith unto them, What are ye reasoning about? because ye have no bread? Do ye not yet discern nor understand? have ye your heart still hardened?
Mark 9:19
And He answered and said, O unbelieving generation, how long shall I be with you? how long shall I bear with you? bring him to me.
John 14:9
Jesus saith unto him, Have I been so long with you, and dost thou not know me? Philip, he that hath seen me, hath seen the Father: and how then dost thou say, Shew us the Father?
1 Corinthians 6:5
I speak it to your shame. What! is there not one wise man among you, that is able to judge between his bretheren?
1 Corinthians 15:34
Behave soberly, as ye ought to do, and sin not: for some of you have not the knowledge of God; to your shame I speak it.