Mark 8:17-18

He perceived what they were saying, and He said to them, "What is this discussion of yours about having no bread? Do you not yet see and understand? Are your minds so dull of comprehension?

Luke 24:25

"O dull-witted men," He replied, "with minds so slow to believe all that the Prophets have spoken!

John 3:19

And this is the test by which men are judged--the Light has come into the world, and men loved the darkness more than they loved the Light, because their deeds were wicked.

Matthew 13:14

And in regard to them the prophecy of Isaiah is receiving signal fulfilment: "'You will hear and hear and by no means understand, and you will look and look and by no means see.

Treasury of Scripture Knowledge

Summary

For God speaketh once, yea twice, yet man perceiveth it not.

Bible References

Perceiveth

Matthew 13:14
And in regard to them the prophecy of Isaiah is receiving signal fulfilment: "'You will hear and hear and by no means understand, and you will look and look and by no means see.
Mark 8:17
He perceived what they were saying, and He said to them, "What is this discussion of yours about having no bread? Do you not yet see and understand? Are your minds so dull of comprehension?
Luke 24:25
"O dull-witted men," He replied, "with minds so slow to believe all that the Prophets have spoken!
John 3:19
And this is the test by which men are judged--the Light has come into the world, and men loved the darkness more than they loved the Light, because their deeds were wicked.