Romans 11:8
The rest grew callous; as Scripture says--'God has given them a deadness of mind--eyes that are not to see and ears that are not to hear--and it is so to this very day.'
Matthew 13:13-14
That is why I speak to them in parables, because, though they have eyes, they do not see, and though they have ears, they do not hear or understand.
Mark 4:11-12
And he said: "To you the hidden truth of the Kingdom of God has been imparted; but to those who are outside it all teaching takes the form of parables, that--
Luke 8:10
"To you," he said, "the knowledge of the hidden truths of the Kingdom of God has been imparted, but to others in parables only, that 'though they have eyes they may not see, and though they have ears, they may not understand.'
Acts 28:26
'Go to this nation and say--"You will hear with your ears without ever understanding, and, though you have eyes, you will see without ever perceiving."
2 Corinthians 3:14-15
But their minds were slow to learn. Indeed, to this very day, at the public reading of the Old Covenant, the same veil remains unlifted; only for those who are in union with Christ does it pass away.