Matthew 12:34
"Broods of vipers! how can ye speak good things, being yourselves evil? For, out of the abundance of the heart, the mouth speaks.
Matthew 13:14-15
And to them is fulfilled the prophecy of Isaiah, which says, 'With hearing ye will hear, and will not understand; and, seeing, ye will see, and will not perceive;
John 5:44
How can ye believe, who receive glory from one another, and the glory which is from God only ye seek not?
John 8:43
Why do ye not understand My speech? it is because ye cannot hear My word.
John 12:39-40
On this account they could not believe, because Isaiah said again,
Acts 14:16
Who, in the past generations, suffered all the nations to walk in their own ways;
Romans 1:21-23
because, having known God, they did not glorify Him as God, nor did they give thanks; but they became vain in their reasonings, and their senseless heart was darkened.
Romans 1:28
And, as they did not approve the holding of God in their knowledge, God delivered them up to a reprobate mind, to do those things which are not becoming;
Romans 11:8-10
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."
2 Corinthians 4:3-4
And, even if our Gospel has been veiled, it has been veiled in those who perish;
2 Thessalonians 2:9-12
him whose coming is according to the working of Satan in all power and signs and lying wonders,
2 Peter 2:14
having eyes full of lustfulness, and that cannot cease from sin; enticing unstable souls; having a heart exercised in covetousness; children of a curse;