Mark 8:18

You have eyes, do you not see? you have ears, do you not hear?

Mark 4:12

so that for all their seeing they may not perceive, and for all their hearing they may not understand, lest they turn and be forgiven."

Matthew 13:14-15

In their case the prophecy of Isaiah is being fulfilled: You will hear and hear but never understand, you will see and see but never perceive.

John 12:40

He has blinded their eyes and made their hearts insensible, to prevent them seeing with their eyes and understanding with their hearts and turning for me to cure them.

Acts 28:26-27

when he said, Go and tell this people, 'You will hear and hear but never understand, you will see and see but never perceive.'

2 Peter 1:12

Hence I mean to keep on reminding you of this, although you are aware of it and are fixed in the Truth as it is;

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 for all their seeing they may not perceive, and for all their hearing they may not understand, lest they turn and be forgiven."
Matthew 13:14
In their case the prophecy of Isaiah is being fulfilled: You will hear and hear but never understand, you will see and see but never perceive.
John 12:40
He has blinded their eyes and made their hearts insensible, to prevent them seeing with their eyes and understanding with their hearts and turning for me to cure them.
Acts 28:26
when he said, Go and tell this people, 'You will hear and hear but never understand, you will see and see but never perceive.'

Do

2 Peter 1:12
Hence I mean to keep on reminding you of this, although you are aware of it and are fixed in the Truth as it is;

General references

Matthew 13:13
This is why I speak to them in parables, because for all their seeing they do not see and for all their hearing they do not hear or understand.
Matthew 15:16
He said, "And are you totally ignorant?
Matthew 16:10
And the seven loaves of the four thousand and how many large baskets you took up?
Luke 9:45
But they did not understand this saying ??indeed it was kept a secret from them, to prevent them from fathoming it ??and they were afraid to ask him about this saying.