Deuteronomy 29:4

29:4 But to this very day the Lord has not given you an understanding mind, perceptive eyes, or discerning ears!

Isaiah 6:9

6:9 He said, “Go and tell these people:

‘Listen continually, but don’t understand!

Look continually, but don’t perceive!’

Isaiah 29:14

29:14 Therefore I will again do an amazing thing for these people –

an absolutely extraordinary deed.

Wise men will have nothing to say,

the sages will have no explanations.”

Isaiah 44:18

44:18 They do not comprehend or understand,

for their eyes are blind and cannot see;

their minds do not discern.

Jeremiah 5:21

5:21 Tell them: ‘Hear this,

you foolish people who have no understanding,

who have eyes but do not discern,

who have ears but do not perceive:

Matthew 13:14-17

13:14 And concerning them the prophecy of Isaiah is fulfilled that says:

‘You will listen carefully yet will never understand,

you will look closely yet will never comprehend.

13:15 For the heart of this people has become dull;

they are hard of hearing,

and they have shut their eyes,

so that they would not see with their eyes

and hear with their ears

and understand with their hearts

and turn, and I would heal them.’

13:16 “But your eyes are blessed because they see, and your ears because they hear. 13:17 For I tell you the truth, many prophets and righteous people longed to see what you see but did not see it, and to hear what you hear but did not hear it.

John 12:40

12:40 “He has blinded their eyes

and hardened their heart,

so that they would not see with their eyes

and understand with their heart,

and turn to me, and I would heal them.”

Acts 28:26-27

28:26 when he said,

‘Go to this people and say,

“You will keep on hearing, but will never understand,

and you will keep on looking, but will never perceive.

28:27 For the heart of this people has become dull,

and their ears are hard of hearing,

and they have closed their eyes,

so that they would not see with their eyes

and hear with their ears

and understand with their heart

and turn, and I would heal them.”’

Romans 11:7-10

11:7 What then? Israel failed to obtain what it was diligently seeking, but the elect obtained it. The rest were hardened, 11:8 as it is written,

“God gave them a spirit of stupor,

eyes that would not see and ears that would not hear,

to this very day.”

11:9 And David says,

“Let their table become a snare and trap,

a stumbling block and a retribution for them;

11:10 let their eyes be darkened so that they may not see,

and make their backs bend continually.”