Luke 24:25

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

Mark 7:18

And he saith to them, Are ye so void of understanding also? Do ye not perceive, that whatever thing from without entereth into the man, it cannot defile him.

Mark 8:17-18

And when Jesus knew it, he saith to them, Why reason ye, because ye have no bread? perceive ye not yet, neither understand? have ye your heart yet hardened?

Mark 9:19

He answered him, and saith, O faithless generation, how long shall I be with you, how long shall I suffer you? bring him to me.

Mark 16:14

Afterward he appeared to the eleven, as they sat at table, and upbraided them with their unbelief, and hardness of heart, because they believed not them who had seen him after he was risen.

Hebrews 5:11-12

Of whom we have many things to say, and hard to be uttered, seeing ye are dull of hearing.

Treasury of Scripture Knowledge

Summary

Luke 24:25

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

O fools

Hebrews 5:11

General references

Matthew 26:54

Mark 7:18

Luke 18:34

Bible References

O fools

And he saith to them, Are ye so void of understanding also? Do ye not perceive, that whatever thing from without entereth into the man, it cannot defile him.

And when Jesus knew it, he saith to them, Why reason ye, because ye have no bread? perceive ye not yet, neither understand? have ye your heart yet hardened?

He answered him, and saith, O faithless generation, how long shall I be with you, how long shall I suffer you? bring him to me.

Afterward he appeared to the eleven, as they sat at table, and upbraided them with their unbelief, and hardness of heart, because they believed not them who had seen him after he was risen.

Of whom we have many things to say, and hard to be uttered, seeing ye are dull of hearing.

General references

But how then shall the scriptures be fulfilled, that thus it must be?

And he saith to them, Are ye so void of understanding also? Do ye not perceive, that whatever thing from without entereth into the man, it cannot defile him.

And they understood none of these things: and this saying was hid from them, neither knew they the things which were spoken.