Mark 2:8

And straightaway Jesus, having perceived in his spirit that they so deliberated within themselves, said to them, Why do ye deliberate these things in your hearts?

1 Chronicles 29:17

I know also, my God, that thou try the heart, and have pleasure in uprightness. As for me, in the uprightness of my heart I have willingly offered all these things. And now I have seen with joy thy people, who are present here, off

Psalm 139:2

Thou know my sitting down and my rising up. Thou understand my thought afar off.

Proverbs 15:26

Evil devices are an abomination to LORD, but pleasant words [are] pure.

Proverbs 24:9

The thought of folly is sin. And the scoffer is an abomination to men.

Isaiah 55:7

Let the wicked man forsake his way, and the unrighteous man his thoughts. And let him return to LORD, and he will have mercy upon him, and to our God, for he will abundantly pardon.

Ezekiel 38:10

Thus says lord LORD: It shall come to pass in that day, that things shall come into thy mind, and thou shall devise an evil plan.

Matthew 9:4

And having known their thoughts Jesus said, Why think ye evil in your hearts?

Mark 7:21

For from inside the heart of men proceed evil thoughts, adulteries, fornications, murders, thefts,

Luke 5:22

But when Jesus perceived their thoughts, having responded, he said to them, Why do ye deliberate in your hearts?

Luke 6:8

But he knew their thoughts, and he said to the man who had the withered hand, Rise up, and stand forth in the midst. And having risen, he stood up.

Luke 7:39-40

But when the Pharisee who invited him saw it, he spoke within himself, saying, This man, if he were a prophet, would know who and what kind the woman is who touches him, that she is sinful.

Luke 24:38

And he said to them, Why are ye troubled, and why do thoughts arise in your hearts?

John 2:24-25

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

John 6:64

Nevertheless, there are some of you who do not believe. For Jesus had known from the beginning who they are who do not believe, and who he is who will betray him.

John 21:17

He says to him the third time, Simon, son of Jonah, do thou love me? Peter was grieved because he said to him the third time, Do thou love me? And he said to him, Lord, thou know all things. Thou know that I love thee. Jesus says t

Acts 5:3

But Peter said, Ananias, why did Satan fill thy heart for thee to lie to the Holy Spirit, and to keep back from the price of the land?

Acts 8:22

Repent therefore from this thine evil, and beg God, if perhaps the thought of thy heart will be forgiven thee.

Hebrews 4:13

And there is no creature concealed from his presence, but all things are naked and vulnerable to his eyes, before whom is the word to us.

Revelation 2:23

And I will kill her children in death. And all the congregations will know that I am he who searches the inner feelings and hearts. And I will give to you--to each--according to your works.

Treasury of Scripture Knowledge

Summary

And immediately when Jesus perceived in his spirit that they so reasoned within themselves, he said unto them, Why reason ye these things in your hearts?

General references

Bible References

When

1 Chronicles 29:17
I know also, my God, that thou try the heart, and have pleasure in uprightness. As for me, in the uprightness of my heart I have willingly offered all these things. And now I have seen with joy thy people, who are present here, off
Matthew 9:4
And having known their thoughts Jesus said, Why think ye evil in your hearts?
Luke 5:22
But when Jesus perceived their thoughts, having responded, he said to them, Why do ye deliberate in your hearts?
Luke 6:8
But he knew their thoughts, and he said to the man who had the withered hand, Rise up, and stand forth in the midst. And having risen, he stood up.
Luke 7:39
But when the Pharisee who invited him saw it, he spoke within himself, saying, This man, if he were a prophet, would know who and what kind the woman is who touches him, that she is sinful.
John 2:24
But Jesus did not trust himself to them, because he knew all men,
John 6:64
Nevertheless, there are some of you who do not believe. For Jesus had known from the beginning who they are who do not believe, and who he is who will betray him.
John 21:17
He says to him the third time, Simon, son of Jonah, do thou love me? Peter was grieved because he said to him the third time, Do thou love me? And he said to him, Lord, thou know all things. Thou know that I love thee. Jesus says t
Hebrews 4:13
And there is no creature concealed from his presence, but all things are naked and vulnerable to his eyes, before whom is the word to us.
Revelation 2:23
And I will kill her children in death. And all the congregations will know that I am he who searches the inner feelings and hearts. And I will give to you--to each--according to your works.

Why

Mark 7:21
For from inside the heart of men proceed evil thoughts, adulteries, fornications, murders, thefts,
Psalm 139:2
Thou know my sitting down and my rising up. Thou understand my thought afar off.
Proverbs 15:26
Evil devices are an abomination to LORD, but pleasant words [are] pure.
Proverbs 24:9
The thought of folly is sin. And the scoffer is an abomination to men.
Isaiah 55:7
Let the wicked man forsake his way, and the unrighteous man his thoughts. And let him return to LORD, and he will have mercy upon him, and to our God, for he will abundantly pardon.
Ezekiel 38:10
Thus says lord LORD: It shall come to pass in that day, that things shall come into thy mind, and thou shall devise an evil plan.
Luke 24:38
And he said to them, Why are ye troubled, and why do thoughts arise in your hearts?
Acts 5:3
But Peter said, Ananias, why did Satan fill thy heart for thee to lie to the Holy Spirit, and to keep back from the price of the land?
Acts 8:22
Repent therefore from this thine evil, and beg God, if perhaps the thought of thy heart will be forgiven thee.

General references

John 20:23
If ye forgive the sins of any, they are forgiven them. If ye retain of any, they are retained.