Mark 8:18

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

Mark 4:12

that seeing they may see, and not perceive, and hearing they may hear, and not understand, lest at any time they should turn, and be forgiven.

Matthew 13:14-15

And in them is fulfilled the prophecy of Isaiah, which says; Hearing you shall hear and not understand, and seeing you shall see and not perceive;

John 12:40

He has blinded their eyes, and hardened their hearts, that they should not see with their eyes and understand with their hearts, and be converted, and I should cure them.

Acts 28:26-27

saying, Go to this people and say, Hearing you shall hear and not understand, and seeing you shall see and not perceive;

2 Peter 1:12

Wherefore I will not neglect always to remind you of these things, although you have known them, and have been 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
that seeing they may see, and not perceive, and hearing they may hear, and not understand, lest at any time they should turn, and be forgiven.
Matthew 13:14
And in them is fulfilled the prophecy of Isaiah, which says; Hearing you shall hear and not understand, and seeing you shall see and not perceive;
John 12:40
He has blinded their eyes, and hardened their hearts, that they should not see with their eyes and understand with their hearts, and be converted, and I should cure them.
Acts 28:26
saying, Go to this people and say, Hearing you shall hear and not understand, and seeing you shall see and not perceive;

Do

2 Peter 1:12
Wherefore I will not neglect always to remind you of these things, although you have known them, and have been established in the present truth.

General references

Matthew 13:13
For this reason I speak to them in parables; because seeing they do not see, and hearing they do not hear, nor understand.
Matthew 15:16
And he said, Are you so entirely without understanding?
Matthew 16:10
nor the seven loaves of the four thousand, and how many store-baskets you took up?
Luke 9:45
But they understood not this saying; and it was concealed from them, that they might not perceive it; and they feared to ask him concerning this saying.