Mark 8:21
And he said to them, "Do you not yet understand?"
Mark 6:52
for they did not understand about the loaves, but their hearts were hardened.
Psalm 94:8
Understand, O dullest of the people! Fools, when will you be wise?
Matthew 16:11-12
How is it that you fail to understand that I did not speak about bread? Beware of the leaven of the Pharisees and Sadducees."
Mark 8:12
And he sighed deeply in his spirit and said, "Why does this generation seek a sign? Truly, I say to you, no sign will be given to this generation."
Mark 8:17
And Jesus, aware of this, said to them, "Why are you discussing the fact that you have no bread? Do you not yet perceive or understand? Are your hearts hardened?
Mark 9:19
And he answered them, "O faithless generation, how long am I to be with you? How long am I to bear with you? Bring him to me."
John 14:9
Jesus said to him, "Have I been with you so long, and you still do not know me, Philip? Whoever has seen me has seen the Father. How can you say, 'Show us the Father'?
1 Corinthians 6:5
I say this to your shame. Can it be that there is no one among you wise enough to settle a dispute between the brothers,
1 Corinthians 15:34
Wake up from your drunken stupor, as is right, and do not go on sinning. For some have no knowledge of God. I say this to your shame.