Romans 11:8
as it has been written, "God gave them a spirit of stupor, eyes that they should not see, and ears that they should not hear, unto this day."
Matthew 13:13-14
On this account, I speak to them in parables; because, seeing, they see not; and, hearing, they hear not, nor understand.
Mark 4:11-12
And He said to them, "To you has been given the mystery of the Kingdom of God, but to those without all things are done in parables;
Luke 8:10
And He said, "To you it has been given to know the mysteries of the Kingdom of God; but to the rest in parables; that, seeing, they may not see, and, hearing, they may not understand.
Acts 28:26
saying, 'Go your way to this people, and say, With hearing ye shall hear, but in no wise understand; and, looking, ye shall look, and in no wise see;
2 Corinthians 3:14-15
But their minds were unimpressible; for until this day upon the reading of the old covenant the same veil remains unlifted; which in Christ is done away.