Mark 8:17
And Jesus having known, says to them, Why reason ye with yourselves, because ye have no loaves? observe ye not yet, neither understand? have ye your heart yet hardened?
Mark 6:52
For they understood not the loaves; for their heart was hardened.
Isaiah 63:17
Wherefore, O Jehovah, wilt thou cause us to wander from thy ways, wilt thou harden our heart from thy fear? turn back for sake of thy servants, the tribes of thine inheritance.
Matthew 15:17
Do ye not yet understand, that everything going into the mouth proceeds to the belly, and is cast out in the privy?
Matthew 16:8-9
And Jesus having known, said to them, Why reason ye among yourselves, O ye of little faith, because ye have taken no loaves
Mark 2:8
And Jesus quickly having known that they discuss in themselves, says to them, Why discuss ye these things in your hearts
Mark 3:5
And having looked round upon them with anger, grieved for the hardness of their heart, he says to the man, Stretch out thy hand. And he stretched out: and his hand was restored whole as the other.
Mark 16:14
Afterwards to those reclining at table was he manifested, and he reproached their unbelief and hard heart, because they believed not them having seen him raised.
Luke 24:25
And he said to them, O ye unwise, and slow in heart to believe in all things which the prophets spake:
John 2:24-25
And Jesus himself trusted not himself to them, for he knew all,
John 16:30
Now we know that thou knowest all things, and bast no need that any ask thee: by this we believe that thou earnest forth from God.
John 21:17
He says to him the third time, Simon of Jonas, lovest thou me? Peter was grieved that he said the third time, Lovest thou me? And he said to him, Lord, thou knowest all; thou knowest that I love thee. Jesus says to him, Feed my sheep.
Hebrews 4:12-13
For the word of God living, and effective, and more piercing than any two-mouthed sword, and penetrating even to the division both of soul and spirit, both the joints and marrows, and a critic of the reflections and thoughts of the heart.
Hebrews 5:11-12
Of whom great is the word to us, and difficult of interpretation to speak, since ye have been sluggish in the hearing.
Revelation 2:23
And her children will I kill in death; and all the churches shall know that I am he searching the reins and hearts: and I will give to you each according to our works.