Matthew 12:34
O race of vipers, how can ye speak good things, who are yourselves so wicked? for out of the abundance of the heart the mouth speaketh.
Matthew 13:14-15
And in them is fulfilled the prophecy of Isaiah, which saith, Ye shall hear by the hearing of the ear, and not understand; and in seeing ye shall see, and not perceive: for the heart of this people is grown stupid,
John 5:44
How can ye believe, who receive applause from each other, and the glory which is from God only, ye seek not?
John 8:43
And why do ye not understand my language, but because ye cannot bear my doctrine?
John 12:39-40
And therefore they could not believe; for Esaias had also said,
Acts 14:16
and all things therein, who in generations past suffered all the nations to walk in their own ways: though He left not Himself without witness;
Romans 1:21-23
so that they are inexcusable; because having thus known God they glorified Him not as God, neither were they thankful; but were infatuated by their own reasonings, and their heart being void of understanding was darkened.
Romans 1:28
And as they were not careful to acknowledge God, God gave them up to an undiscerning mind to do things that were not fit to be done:
Romans 11:8-10
(according as it is written, God hath given them a spirit of slumber, that their eyes could not see and their ears could not hear,) even unto this day.
2 Corinthians 4:3-4
And if our gospel also be veiled, it is to those that perish;
2 Thessalonians 2:9-12
who comes, through the efficacy of Satan, with all kind of lying power, and signs,
2 Peter 2:14
having eyes full of adultery, and which cannot be restrained from sin: ensnaring unstable souls, and having a heart practised in rapine; cursed people: