Romans 11:8
(according as it is written, God hath given them a spirit of slumber, that their eyes could not see and their ears could not hear,) even unto this day.
Matthew 13:13-14
for this reason I speak to them in parables; because though they see, they will not see; and though they hear, they will not hear, nor understand.
Mark 4:11-12
And he said unto them, To you it is granted to know the mystery of the kingdom of God; but unto them that are without all things are delivered in parables:
Luke 8:10
And He said, To you it is granted to know the mysteries of the kingdom of God: but I speak to others in parables, that in seeing they may not see, and hearing they may not understand.
Acts 28:26
saying, Go to this people and say, Ye shall hear by the hearing of the ear, and not understand; and in seeing ye shall see, and not perceive: for the heart of this people is stupified,
2 Corinthians 3:14-15
for unto this day the same veil remaineth unremoved in the reading of the old testament, which veil is taken away in Christ.