Mark 8:18

You have eyes! can you not see? You have ears! can you not hear? and have you no memory?

Mark 4:12

that "'They may look and look but not see, and listen and listen but not understand, lest perchance they should return and be pardoned.'"

Matthew 13:14-15

And in regard to them the prophecy of Isaiah is receiving signal fulfilment: "'You will hear and hear and by no means understand, and you will look and look and by no means see.

John 12:40

"He has blinded their eyes and made their minds callous, lest they should see with their eyes and perceive with their minds, and should turn, and I should heal them."

Acts 28:26-27

"'Go to this people and tell them, you will hear and hear, and by no means understand; and will look and look, and by no means see.

Romans 11:8

And so Scripture says, "God has given them a spirit of drowsiness--eyes to see nothing with and ears to hear nothing with--even until now."

2 Peter 1:12

For this reason I shall always persist in reminding you of these things, although you know them and are stedfast believers in truth which you already possess.

Treasury of Scripture Knowledge

Summary

Having eyes, see ye not? and having ears, hear ye not? and do ye not remember?

Bible References

See

Mark 4:12
that "'They may look and look but not see, and listen and listen but not understand, lest perchance they should return and be pardoned.'"
Matthew 13:14
And in regard to them the prophecy of Isaiah is receiving signal fulfilment: "'You will hear and hear and by no means understand, and you will look and look and by no means see.
John 12:40
"He has blinded their eyes and made their minds callous, lest they should see with their eyes and perceive with their minds, and should turn, and I should heal them."
Acts 28:26
"'Go to this people and tell them, you will hear and hear, and by no means understand; and will look and look, and by no means see.
Romans 11:8
And so Scripture says, "God has given them a spirit of drowsiness--eyes to see nothing with and ears to hear nothing with--even until now."

Do

2 Peter 1:12
For this reason I shall always persist in reminding you of these things, although you know them and are stedfast believers in truth which you already possess.

General references

Matthew 13:13
I speak to them in figurative language for this reason, that while looking they do not see, and while hearing they neither hear nor understand.
Matthew 15:16
"Are even you," He answered, "still without intellingence?
Matthew 16:10
nor the 4,000 and the seven loaves, and how many hampers you carried away?
Luke 9:45
But they did not understand His meaning: it was veiled from them that they might not perceive it, and they were afraid to ask Him about it.