Matthew 13:13-14
"This is why I speak to them in parables, because seeing they do not see, and hearing they do not hear, nor do they understand.
Mark 4:12
so that, "for all their looking they may not see, and for all their hearing, they may not understand, lest perchance they should turn and be pardoned.
Luke 8:10
He answered. "To you it is given to understand the mysteries of the kingdom of God; But all others are taught in parables so that seeing they shall not see, and hearing they shall not hear.
John 9:39-41
"For judgment am I come into the world, to make the sightless see, and to make the seeing blind."
John 12:40
He hath blinded their eyes and make their hearts hard, Lest they should see with their eyes, perceive with their minds, And should turn, and I should heal them.
Mark 8:17-18
"Why are you arguing together because you have no bread? Do you not yet perceive and understand?
Acts 7:51-52
"Stiff-necked, uncircumcised in heart and ears! You are always resisting the Holy Ghost! As your fathers did, so do you.
Acts 28:26-27
"Go to the people and tell them, You will hear and hear, and by no means understand; And will look, and by no means see.
Romans 11:7-8
What then? that which Israel has been seeking for, that he has not obtained; but the chosen have obtained it, and the rest have been hardened.
2 Corinthians 3:14
Nay, their minds were made dull; for to this very day, at the public reading of the Old Testament, the same veil rests thereon, because it is not revealed to them that in Christ the veil is taken away.
2 Corinthians 4:3-4
But even if my gospel, too, is "veiled," it is among those who are on the way to perish that it is "veiled."
Ephesians 4:18
having their understanding darkened, alienated from the life of God through the ignorance that is in them, because of the hardening of their hearts.
2 Thessalonians 2:10-11
and with all deceit of unrighteousness for those who are perishing, because they did not receive the love of the truth for their salvation.