Mark 8:17-18
And he noticed it and said to them, "Why do you discuss your being without bread? Do you not yet see nor understand? Are your minds so dull?
Luke 24:25
Then he said to them, "How foolish you are and how slow to believe all that the prophets have said!
John 3:19
And the basis of the judgment is this, that the light has come into the world, and yet, because their actions were wicked, men have loved the darkness more than the light.
Matthew 13:14
They are a fulfilment of Isaiah's prophecy, " 'You will listen and listen, and never understand, And you will look and look, and never see!