Mark 8:17

And Jesus knowing it said unto them, Why reason ye together, because ye have no loaves? Do ye not yet consider, nor understand? Have ye your heart yet hardened?

Mark 6:52

For they reflected not upon the loaves, for their heart was hardened.

Matthew 15:17

Do ye not observe, that every thing which entereth into the mouth passeth into the belly, and is ejected into the vault?

Matthew 16:8-9

But when Jesus knew it, he said unto them, Why are ye reasoning among yourselves, O ye of little faith, because ye have not taken bread?

Mark 2:8

And instantly Jesus knowing by his spirit, that they reasoned thus among each other, said to them, Why reason ye about these things in your hearts?

Mark 3:5

Then looking round about on them with indignation, exceedingly grieved for the hardness of their hearts, he saith to the man, Stretch out thine hand; and he stretched it out: and his hand was restored sound as the other.

Mark 16:14

Afterwards he shewed himself to the eleven, as they were sitting at table, and upbraided them for their infidelity and hardness of heart, because they did not believe those who had seen him after he was risen.

Luke 24:25

And he said unto them, O ye void of understanding, and slow of heart to believe all that the prophets have spoken!

John 2:24-25

But Jesus himself did not trust himself to them, because he knew them all,

John 16:30

Now we know that thou knowest all things, and needest not that any person should ask thee: by this we believe that thou hast come forth from God.

John 21:17

He saith to him the third time, Simon, son of Jonas, lovest thou me? Peter was grieved because he said unto him the third time, Lovest thou me? And he said to him, Lord, thou knowest all things, thou knowest that I love thee! Jesus saith to him, Feed my sheep.

Hebrews 4:12-13

For the word of God is quickening, and energetic, and sharper than every two-edged sword, and piercing through and through, so as to divide both soul and spirit, both joints and spinal marrow, and critically judges the thoughts and intents of the heart.

Hebrews 5:11-12

Concerning whom we have much to discourse, and of difficult interpretation to explain, seeing ye are dull of hearing.

Revelation 2:23

And I will slay her children by death; and all the churches shall know that I am he who searcheth the reins and the hearts: and I will give to you, even to every one, according to your works.

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
And instantly Jesus knowing by his spirit, that they reasoned thus among each other, said to them, Why reason ye about these things in your hearts?
John 2:24
But Jesus himself did not trust himself to them, because he knew them all,
John 16:30
Now we know that thou knowest all things, and needest not that any person should ask thee: by this we believe that thou hast come forth from God.
John 21:17
He saith to him the third time, Simon, son of Jonas, lovest thou me? Peter was grieved because he said unto him the third time, Lovest thou me? And he said to him, Lord, thou knowest all things, thou knowest that I love thee! Jesus saith to him, Feed my sheep.
Hebrews 4:12
For the word of God is quickening, and energetic, and sharper than every two-edged sword, and piercing through and through, so as to divide both soul and spirit, both joints and spinal marrow, and critically judges the thoughts and intents of the heart.
Revelation 2:23
And I will slay her children by death; and all the churches shall know that I am he who searcheth the reins and the hearts: and I will give to you, even to every one, according to your works.

Perceive

Mark 3:5
Then looking round about on them with indignation, exceedingly grieved for the hardness of their hearts, he saith to the man, Stretch out thine hand; and he stretched it out: and his hand was restored sound as the other.
Mark 6:52
For they reflected not upon the loaves, for their heart was hardened.
Mark 16:14
Afterwards he shewed himself to the eleven, as they were sitting at table, and upbraided them for their infidelity and hardness of heart, because they did not believe those who had seen him after he was risen.
Matthew 15:17
Do ye not observe, that every thing which entereth into the mouth passeth into the belly, and is ejected into the vault?
Matthew 16:8
But when Jesus knew it, he said unto them, Why are ye reasoning among yourselves, O ye of little faith, because ye have not taken bread?
Luke 24:25
And he said unto them, O ye void of understanding, and slow of heart to believe all that the prophets have spoken!
Hebrews 5:11
Concerning whom we have much to discourse, and of difficult interpretation to explain, seeing ye are dull of hearing.

General references

Matthew 13:13
Therefore I speak to them in parables: that seeing, they may not see; and hearing, they may not hear nor understand.
Matthew 15:16
And Jesus said, Are ye also to this time destitute of intelligence?
Matthew 16:10
Nor the seven loaves among the four thousand, and how many baskets ye took up?
Luke 9:45
And they understood not that declaration, and it was hid from them, that they should not comprehend its meaning: and they were afraid to ask him concerning that saying.