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 4:12
that, seeing, they may see, and not perceive; and, hearing, they may hear, and not understand; lest haply they should turn, and be forgiven."
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.
John 9:39-41
And Jesus said, "For judgment came I into the world; that those who see not may see, and that those who see may become blind."
John 12:40
"He hath blinded their eyes, and He hardened their heart, lest they should see with their eyes, and understand with their heart, and turn, and I should heal them."
Mark 8:17-18
And perceiving it, He saith to them, "Why are ye reasoning because ye have no bread? Do ye not yet perceive, nor understand? Have ye your heart hardened?
Acts 7:51-52
Ye stiffnecked, and uncircumcised in heart and ears! ye do always resist the Holy Spirit; as your fathers did, so do ye.
Acts 28:26-27
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;
Romans 11:7-8
What, then? What Israel is seeking for, this he did not obtain; but the election obtained it, and the rest were hardened;
2 Corinthians 3:14
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.
2 Corinthians 4:3-4
And, even if our Gospel has been veiled, it has been veiled in those who perish;
Ephesians 4:18
being darkened in their understanding, alienated from the life of God because of the ignorance that is in them, because of the hardness of their hearts;
2 Thessalonians 2:10-11
and in all deceit of unrighteousness to those who perish; because they received not the love of the truth, that they might be saved.