Matthew 12:34
Offspring of vipers, how can you, being evil, speak good things? For out of the abundance of the heart the mouth speaks.
Matthew 13:14-15
And in them is fulfilled the prophecy of Isaiah, which says; Hearing you shall hear and not understand, and seeing you shall see and not perceive;
John 5:44
How can you believe, receiving glory one from another, and the glory from God alone you seek not?
John 8:43
Why do you not understand my speech? because you cannot hear my word.
John 12:39-40
For this reason they could not believe, because, Isaiah said again,
Acts 14:16
who in past generations permitted all nations to walk in their own ways;
Romans 1:21-23
because having known God they glorified him not as God neither were thankful, but became vain in their reasonings and their ignorant mind was darkened.
Romans 1:28
And as they did not choose to retain God in their knowledge, God gave them up to a reprobate mind, to do things which are not proper,
2 Corinthians 4:3-4
But if our gospel is vailed it is vailed among the lost,
2 Thessalonians 2:9-12
whose coming is according to the power of Satan, with all power and miracles and false prodigies
2 Peter 2:14
having eyes full of an adulteress, and unable to cease from sin, enticing unstable souls, having a heart exercised in covetousness, cursed children,