Mark 8:17-18

And Jesus knowing says to them, Why do you reason because you have not bread? do you not yet know, nor understand? have you your heart still hardened?

Luke 24:25

And He said to them, O ye foolish, and slow in heart to believe in all those things which the prophet spoke!

John 3:19

And this is the condemnation, that light has come into the world, and men love darkness rather than light; for their works are evil.

Matthew 13:14

And the prophecy of Isaiah is fulfilled unto them, saying, By hearing ye shall hear, and may not understand; and seeing you shall see, and may not perceive.

Treasury of Scripture Knowledge

Summary

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

Bible References

Perceiveth

Matthew 13:14
And the prophecy of Isaiah is fulfilled unto them, saying, By hearing ye shall hear, and may not understand; and seeing you shall see, and may not perceive.
Mark 8:17
And Jesus knowing says to them, Why do you reason because you have not bread? do you not yet know, nor understand? have you your heart still hardened?
Luke 24:25
And He said to them, O ye foolish, and slow in heart to believe in all those things which the prophet spoke!
John 3:19
And this is the condemnation, that light has come into the world, and men love darkness rather than light; for their works are evil.