Matthew 13:13-14
Therefore I speak to them in parables, because seeing they see not, and hearing they hear not, neither do they understand.
Mark 4:12
So that seeing they see, and do not perceive, and hearing they hear, and do not understand; lest at any time they should be converted, and their sins should be forgiven them.
Luke 8:10
And he said, To you it is given to know the mysteries of the kingdom of God, but to others in parables, so that seeing they do not see, and hearing they do not understand.
John 9:39-41
And he worshiped him. Jesus said, For judgment am I come into the world, that they who see not, may see, and that they who see, may become blind.
John 12:40
He hath blinded their eyes, and hardened their hearts, that they might not see with their eyes, and understand with their heart, and be converted, that I might heal them.
Mark 8:17-18
And Jesus knowing it saith to them, Why reason ye, because ye have no bread? Perceive ye not yet, neither consider? Have ye your heart yet hardened?
Acts 7:51-52
as your fathers, so do ye.
Acts 28:26-27
Saying, Go to this people and say, Hearing ye shall hear, and shall not understand, and seeing ye shall see, and shall not perceive.
Romans 11:7-8
What then? Israel hath not obtained that which he seeketh, but the election hath obtained, and the rest were blinded.
2 Corinthians 3:14
But their understandings were blinded: and until this day the same veil remaineth unremoved on the reading of the old testament, which is taken away in Christ.
2 Corinthians 4:3-4
But if our gospel also is veiled, it is veiled to them that perish;
Ephesians 4:18
Having the understanding darkened, being alienated from the life of God, by the ignorance that is in them, through the hardness of their hearts:
2 Thessalonians 2:10-11
And with all deceiveableness of unrighteousness in them that perish, because they received not the love of the truth, that they might be saved.