Luke 24:25

He said to them, “How unwise and slow you are to believe in your hearts all that the prophets have spoken!

Mark 7:18

And He said to them, “Are you also as lacking in understanding? Don’t you realize that nothing going into a man from the outside can defile him?

Mark 8:17-18

Aware of this, He said to them, “Why are you discussing that you do not have any bread? Don’t you understand or comprehend? Is your heart hardened?

Mark 9:19

He replied to them, “You unbelieving generation! How long will I be with you? How long must I put up with you? Bring him to Me.”

Mark 16:14

Later, He appeared to the Eleven themselves as they were reclining at the table. He rebuked their unbelief and hardness of heart, because they did not believe those who saw Him after He had been resurrected.

Hebrews 5:11-12

We have a great deal to say about this, and it’s difficult to explain, since you have become too lazy to understand.

Treasury of Scripture Knowledge

Summary

Then he said unto them, O fools, and slow of heart to believe all that the prophets have spoken:

General references

Bible References

O fools

Mark 7:18
And He said to them, “Are you also as lacking in understanding? Don’t you realize that nothing going into a man from the outside can defile him?
Mark 8:17
Aware of this, He said to them, “Why are you discussing that you do not have any bread? Don’t you understand or comprehend? Is your heart hardened?
Mark 9:19
He replied to them, “You unbelieving generation! How long will I be with you? How long must I put up with you? Bring him to Me.”
Mark 16:14
Later, He appeared to the Eleven themselves as they were reclining at the table. He rebuked their unbelief and hardness of heart, because they did not believe those who saw Him after He had been resurrected.
Hebrews 5:11
We have a great deal to say about this, and it’s difficult to explain, since you have become too lazy to understand.

General references

Matthew 26:54
How, then, would the Scriptures be fulfilled that say it must happen this way?”
Mark 7:18
And He said to them, “Are you also as lacking in understanding? Don’t you realize that nothing going into a man from the outside can defile him?
Luke 18:34
They understood none of these things. This saying was hidden from them, and they did not grasp what was said.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.