Mark 8:17

And Jesus, aware of this, *said to them, “Why do you discuss the fact that you have no bread? Do you not yet see or understand? Do you have a hardened heart?

Mark 6:52

for they had not gained any insight from the incident of the loaves, but their heart was hardened.

Isaiah 63:17

Why, O Lord, do You cause us to stray from Your ways
And harden our heart from fearing You?
Return for the sake of Your servants, the tribes of Your heritage.

Matthew 15:17

Do you not understand that everything that goes into the mouth passes into the stomach, and is eliminated?

Matthew 16:8-9

But Jesus, aware of this, said, You men of little faith, why do you discuss among yourselves that you have no bread?

Mark 2:8

Immediately Jesus, aware in His spirit that they were reasoning that way within themselves, *said to them, “Why are you reasoning about these things in your hearts?

Mark 3:5

After looking around at them with anger, grieved at their hardness of heart, He *said to the man, “Stretch out your hand.” And he stretched it out, and his hand was restored.

Mark 16:14

Afterward He appeared to the eleven themselves as they were reclining at the table; and He reproached them for their unbelief and hardness of heart, because they had not believed those who had seen Him after He had risen.

Luke 24:25

And He said to them, “O foolish men and slow of heart to believe in all that the prophets have spoken!

John 2:24-25

But Jesus, on His part, was not entrusting Himself to them, for He knew all men,

John 16:30

Now we know that You know all things, and have no need for anyone to question You; by this we believe that You came from God.”

John 21:17

He *said to him the third time, “Simon, son of John, do you love Me?” Peter was grieved because He said to him the third time, “Do you love Me?” And he said to Him, “Lord, You know all things; You know that I love You.” Jesus *said to him, Tend My sheep.

Hebrews 4:12-13

For the word of God is living and active and sharper than any two-edged sword, and piercing as far as the division of soul and spirit, of both joints and marrow, and able to judge the thoughts and intentions of the heart.

Hebrews 5:11-12

Concerning him we have much to say, and it is hard to explain, since you have become dull of hearing.

Revelation 2:23

And I will kill her children with pestilence, and all the churches will know that I am He who searches the minds and hearts; and I will give to each one of you according to your deeds.

Treasury of Scripture Knowledge

Summary

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

Bible References

Knew

Mark 2:8
Immediately Jesus, aware in His spirit that they were reasoning that way within themselves, *said to them, “Why are you reasoning about these things in your hearts?
John 2:24
But Jesus, on His part, was not entrusting Himself to them, for He knew all men,
John 16:30
Now we know that You know all things, and have no need for anyone to question You; by this we believe that You came from God.”
John 21:17
He *said to him the third time, “Simon, son of John, do you love Me?” Peter was grieved because He said to him the third time, “Do you love Me?” And he said to Him, “Lord, You know all things; You know that I love You.” Jesus *said to him, Tend My sheep.
Hebrews 4:12
For the word of God is living and active and sharper than any two-edged sword, and piercing as far as the division of soul and spirit, of both joints and marrow, and able to judge the thoughts and intentions of the heart.
Revelation 2:23
And I will kill her children with pestilence, and all the churches will know that I am He who searches the minds and hearts; and I will give to each one of you according to your deeds.

Perceive

Mark 3:5
After looking around at them with anger, grieved at their hardness of heart, He *said to the man, “Stretch out your hand.” And he stretched it out, and his hand was restored.
Mark 6:52
for they had not gained any insight from the incident of the loaves, but their heart was hardened.
Mark 16:14
Afterward He appeared to the eleven themselves as they were reclining at the table; and He reproached them for their unbelief and hardness of heart, because they had not believed those who had seen Him after He had risen.
Isaiah 63:17
Why, O Lord, do You cause us to stray from Your ways
And harden our heart from fearing You?
Return for the sake of Your servants, the tribes of Your heritage.
Matthew 15:17
Do you not understand that everything that goes into the mouth passes into the stomach, and is eliminated?
Matthew 16:8
But Jesus, aware of this, said, You men of little faith, why do you discuss among yourselves that you have no bread?
Luke 24:25
And He said to them, “O foolish men and slow of heart to believe in all that the prophets have spoken!
Hebrews 5:11
Concerning him we have much to say, and it is hard to explain, since you have become dull of hearing.

General references

Matthew 13:13
Therefore I speak to them in parables; because while seeing they do not see, and while hearing they do not hear, nor do they understand.
Matthew 15:16
Jesus said, “Are you still lacking in understanding also?
Matthew 16:10
Or the seven loaves of the four thousand, and how many large baskets full you picked up?
Luke 9:45
But they did not understand this statement, and it was concealed from them so that they would not perceive it; and they were afraid to ask Him about this statement.