Luke 24:25

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

Mark 7:18

And he said unto them, Are ye so without understanding also? Do ye not understand that anything from outside that enters into the man cannot defile him?

Mark 8:17-18

And as Jesus understood it, he said unto them, Why argue ye because ye have no bread? Do ye not consider nor understand? is your heart yet blind?

Mark 9:19

Answering, he said unto him, O unfaithful generation, how long shall I be with you? How long must I suffer you? Bring him unto me.

Mark 16:14

Finally he appeared unto the eleven as they sat at the table and upbraided them for their unbelief and hardness of heart because they did not believe those who had seen him after he was risen.

Hebrews 5:11-12

Of whom we have many things to say and difficult to declare, seeing ye are hard 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 said unto them, Are ye so without understanding also? Do ye not understand that anything from outside that enters into the man cannot defile him?

And as Jesus understood it, he said unto them, Why argue ye because ye have no bread? Do ye not consider nor understand? is your heart yet blind?

Answering, he said unto him, O unfaithful generation, how long shall I be with you? How long must I suffer you? Bring him unto me.

Finally he appeared unto the eleven as they sat at the table and upbraided them for their unbelief and hardness of heart because they did not believe those who had seen him after he was risen.

Of whom we have many things to say and difficult to declare, seeing ye are hard of hearing.

General references

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

And he said unto them, Are ye so without understanding also? Do ye not understand that anything from outside that enters into the man cannot defile him?

And they understood none of these things, and this word was hid from them, and they did not know what was said.