Mark 4:12

that, seeing, they may see, and not perceive; and, hearing, they may hear, and not understand; lest haply they should turn, and be forgiven."

Luke 8:10

And He said, "To you it has been given to know the mysteries of the Kingdom of God; but to the rest in parables; that, seeing, they may not see, and, hearing, they may not understand.

Matthew 13:14-15

And to them is fulfilled the prophecy of Isaiah, which says, 'With hearing ye will hear, and will not understand; and, seeing, ye will see, and will not perceive;

Romans 11:8

as it has been written, "God gave them a spirit of stupor, eyes that they should not see, and ears that they should not hear, unto this day."

John 12:40

"He hath blinded their eyes, and He hardened their heart, lest they should see with their eyes, and understand with their heart, and turn, and I should heal them."

Acts 28:26-27

saying, 'Go your way to this people, and say, With hearing ye shall hear, but in no wise understand; and, looking, ye shall look, and in no wise see;

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.

General references

Bible References

Hear ye

Matthew 13:14
And to them is fulfilled the prophecy of Isaiah, which says, 'With hearing ye will hear, and will not understand; and, seeing, ye will see, and will not perceive;
Mark 4:12
that, seeing, they may see, and not perceive; and, hearing, they may hear, and not understand; lest haply they should turn, and be forgiven."
Luke 8:10
And He said, "To you it has been given to know the mysteries of the Kingdom of God; but to the rest in parables; that, seeing, they may not see, and, hearing, they may not understand.
John 12:40
"He hath blinded their eyes, and He hardened their heart, lest they should see with their eyes, and understand with their heart, and turn, and I should heal them."
Acts 28:26
saying, 'Go your way to this people, and say, With hearing ye shall hear, but in no wise understand; and, looking, ye shall look, and in no wise see;
Romans 11:8
as it has been written, "God gave them a spirit of stupor, eyes that they should not see, and ears that they should not hear, unto this day."

General references

John 8:27
They perceived not that He was speaking to them of the Father.