Isaiah 6:9

He said, “Go, and tell this people:
‘Keep on listening, but do not perceive;
Keep on looking, but do not understand.’

Mark 4:12

so that while seeing, they may see and not perceive, and while hearing, they may hear and not understand, otherwise they might return and be forgiven.”

Luke 8:10

And He said, To you it has been granted to know the mysteries of the kingdom of God, but to the rest it is in parables, so that seeing they may not see, and hearing they may not understand.

Matthew 13:14-15

In their case the prophecy of Isaiah is being fulfilled, which says,
You will keep on hearing, but will not understand;
You will keep on seeing, but will not perceive;

Romans 11:8

just as it is written,
God gave them a spirit of stupor,
Eyes to see not and ears to hear not,
Down to this very day.”

Isaiah 43:8

Bring out the people who are blind, even though they have eyes,
And the deaf, even though they have ears.

John 12:40

He has blinded their eyes and He hardened their heart, so that they would not see with their eyes and perceive with their heart, and be converted and I heal them.”

Acts 28:26-27

saying,
Go to this people and say,
You will keep on hearing, but will not understand;
And you will keep on seeing, but will not perceive;

Exodus 32:7-10

Then the Lord spoke to Moses, “Go down at once, for your people, whom you brought up from the land of Egypt, have corrupted themselves.

Isaiah 29:13

Then the Lord said,
“Because this people draw near with their words
And honor Me with their lip service,
But they remove their hearts far from Me,
And their reverence for Me consists of tradition learned by rote,

Isaiah 30:8-11

Now go, write it on a tablet before them
And inscribe it on a scroll,
That it may serve in the time to come
As a witness forever.

Isaiah 44:18-20

They do not know, nor do they understand, for He has smeared over their eyes so that they cannot see and their hearts so that they cannot comprehend.

Jeremiah 15:1-2

Then the Lord said to me, “Even though Moses and Samuel were to stand before Me, My heart would not be with this people; send them away from My presence and let them go!

Hosea 1:9

And the Lord said, “Name him Lo-ammi, for you are not My people and I am not your God.”

Treasury of Scripture Knowledge

Summary

And he said, Go, and tell this people, Hear ye indeed, but understand not; and see ye indeed, but perceive not.

Bible References

Hear ye

Isaiah 43:8
Bring out the people who are blind, even though they have eyes,
And the deaf, even though they have ears.
Isaiah 44:18
They do not know, nor do they understand, for He has smeared over their eyes so that they cannot see and their hearts so that they cannot comprehend.
Matthew 13:14
In their case the prophecy of Isaiah is being fulfilled, which says,
You will keep on hearing, but will not understand;
You will keep on seeing, but will not perceive;
Mark 4:12
so that while seeing, they may see and not perceive, and while hearing, they may hear and not understand, otherwise they might return and be forgiven.”
Luke 8:10
And He said, To you it has been granted to know the mysteries of the kingdom of God, but to the rest it is in parables, so that seeing they may not see, and hearing they may not understand.
John 12:40
He has blinded their eyes and He hardened their heart, so that they would not see with their eyes and perceive with their heart, and be converted and I heal them.”
Acts 28:26
saying,
Go to this people and say,
You will keep on hearing, but will not understand;
And you will keep on seeing, but will not perceive;
Romans 11:8
just as it is written,
God gave them a spirit of stupor,
Eyes to see not and ears to hear not,
Down to this very day.”

General references

Exodus 10:20
But the Lord hardened Pharaoh’s heart, and he did not let the sons of Israel go.
Deuteronomy 28:28
The Lord will smite you with madness and with blindness and with bewilderment of heart;
Deuteronomy 29:4
Yet to this day the Lord has not given you a heart to know, nor eyes to see, nor ears to hear.
Isaiah 43:8
Bring out the people who are blind, even though they have eyes,
And the deaf, even though they have ears.
John 8:27
They did not realize that He had been speaking to them about the Father.