Matthew 13:13-14
For this reason I speak to them in parables; because when they see, they see not; and when they hear, they hear not, nor do they understand.
Mark 4:12
that they may surely see, and not perceive; and that they may surely hear, and not understand; lest they should turn to me, and their sins should be forgiven them.
Luke 8:10
He replied: To you it is given to know the mysteries of the kingdom of God: but to others in parables; that when they see, they may not see, and when they hear, they may not understand.
John 9:39-41
And Jesus said: For judgment have I come into this world, that those who see not, may see; and that those who see, may become blind.
John 12:40
He has blinded their eyes, and hardened their heart, lest they should see with their eyes, and understand with their heart, and should turn, and I should give them health.
Mark 8:17-18
And Jesus perceived it, and said to them: Why do you reason, because you have no bread? Do you not yet perceive, nor understand? Is your heart still hardened?
Acts 7:51-52
You stiff-necked, and uncircumcised in heart and in ears, you do always resist the Holy Spirit; as your fathers did, so also do you.
Acts 28:26-27
saying: Go to this people and say, You shall surely hear, but you will not understand; and you shall surely see, but you will not perceive.
Romans 11:7-8
What then? Israel has not obtained that which he seeks; but the chosen have obtained it, and the rest have been hardened to this day,
2 Corinthians 3:14
But their minds were blinded: for till this day, in the reading of the old covenant, the same vail remains not taken away, which vail is removed in Christ.
2 Corinthians 4:3-4
But if our gospel is vailed, it is vailed among the lost,
Ephesians 4:18
darkened in their understanding, alienated from the life of God through the ignorance that is in them, because of the hardness of their heart;
2 Thessalonians 2:10-11
and with all the delusion of unrighteousness in those who perish, because they did not receive the love of the truth, in order that they might be saved.