Mark 8:18

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

Mark 4:12

So that seeing they see, and do not perceive, and hearing they hear, and do not understand; lest at any time they should be converted, and their sins should be forgiven them.

Matthew 13:14-15

And in them is fulfilled the prophecy of Isaiah who saith, Hearing ye will hear, but in no wise understand, and seeing ye will see, but in no wise perceive.

John 12:40

He hath blinded their eyes, and hardened their hearts, that they might not see with their eyes, and understand with their heart, and be converted, that I might heal them.

Acts 28:26-27

Saying, Go to this people and say, Hearing ye shall hear, and shall not understand, and seeing ye shall see, and shall not perceive.

Romans 11:8

According as it is written, God hath given them a spirit of slumber, eyes that they should not see, and ears that they should not hear, unto this day.

2 Peter 1:12

Wherefore I will not neglect always to remind you of these things, though ye know them, and are established in the present truth,

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
So that seeing they see, and do not perceive, and hearing they hear, and do not understand; lest at any time they should be converted, and their sins should be forgiven them.
Matthew 13:14
And in them is fulfilled the prophecy of Isaiah who saith, Hearing ye will hear, but in no wise understand, and seeing ye will see, but in no wise perceive.
John 12:40
He hath blinded their eyes, and hardened their hearts, that they might not see with their eyes, and understand with their heart, and be converted, that I might heal them.
Acts 28:26
Saying, Go to this people and say, Hearing ye shall hear, and shall not understand, and seeing ye shall see, and shall not perceive.
Romans 11:8
According as it is written, God hath given them a spirit of slumber, eyes that they should not see, and ears that they should not hear, unto this day.

Do

2 Peter 1:12
Wherefore I will not neglect always to remind you of these things, though ye know them, and are established in the present truth,

General references

Matthew 13:13
Therefore I speak to them in parables, because seeing they see not, and hearing they hear not, neither do they understand.
Matthew 15:16
And Jesus said, Are ye also yet without understanding?
Matthew 16:10
Neither the seven loaves of the four thousand, and how many baskets ye took up?
Luke 9:45
But they understood not this saying, and it was hid from them, so that they perceived it not: and they feared to ask him of this saying.