Matthew 13:14

So in them the prophecy of the prophet Isaiah is fulfilled, which says: "'You will listen and listen and not understand, and you will look and look and never see at all,

Mark 4:12

'They may look and look and yet not see, And listen and listen and yet not understand, Lest, perchance, they should turn and be forgiven.'"

Luke 8:10

So He said, "You are granted the privilege of knowing the secrets of the kingdom of God, but to others they are told in stories, so that they may look and not see, may hear and not understand.

John 12:39-40

So they could not believe, for Isaiah again has said:

Acts 28:25-27

Because they could not agree among themselves, they started to leave, when Paul had spoken one word more: "The Holy Spirit beautifully expressed it in speaking to your forefathers through the prophet Isaiah:

Romans 11:8-10

as the Scripture Says, "God has given them over to an attitude of insensibility, so that their eyes cannot see and their ears cannot hear, down to this very day."

2 Corinthians 3:14

Besides, their minds were made dull; for to this day that same veil remains unlifted, whenever they read the Old Covenant; because it is only through union with Christ that it is removed.

Treasury of Scripture Knowledge

Summary

And in them is fulfilled the prophecy of Esaias, which saith, By hearing ye shall hear, and shall not understand; and seeing ye shall see, and shall not perceive:

General references

Bible References

The prophecy

Mark 4:12
'They may look and look and yet not see, And listen and listen and yet not understand, Lest, perchance, they should turn and be forgiven.'"
Luke 8:10
So He said, "You are granted the privilege of knowing the secrets of the kingdom of God, but to others they are told in stories, so that they may look and not see, may hear and not understand.
John 12:39
So they could not believe, for Isaiah again has said:
Acts 28:25
Because they could not agree among themselves, they started to leave, when Paul had spoken one word more: "The Holy Spirit beautifully expressed it in speaking to your forefathers through the prophet Isaiah:
Romans 11:8
as the Scripture Says, "God has given them over to an attitude of insensibility, so that their eyes cannot see and their ears cannot hear, down to this very day."
2 Corinthians 3:14
Besides, their minds were made dull; for to this day that same veil remains unlifted, whenever they read the Old Covenant; because it is only through union with Christ that it is removed.

General references

Matthew 24:39
and knew nothing about it until the Flood came and swept them all away, so it will be at the coming of the Son of Man.