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?

Matthew 9:4

And Jesus, seeing their thoughts, said, wherefore do ye imagine evil things in your hearts?

Mark 7:21

For from within out of the heart of men proceed wicked reasonings, adulteries, whoredoms, murders,

Luke 5:22

And Jesus knowing their reasoning, in reply said to them, Why do ye reason in your hearts?

Luke 6:8

Now he knew their thoughts, and said to the man who had the withered hand, Rise, and stand in the midst. And he arose, and stood up.

Luke 7:39-40

And when the Pharisee who had invited him saw it, he said within himself, If this man were a prophet, he would know who and what kind of a woman this is that toucheth him; for she is a notorious sinner.

Luke 24:38

And he said to them, Why are ye under such agitation of mind? and why do reasonings arise in your hearts?

John 2:24-25

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

John 6:64

But there are some of you who do not believe. For Jesus knew from the beginning who they were who did not believe, and who the person was that should betray him.

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.

Acts 5:3

But Peter said, O Ananias! why hath Satan filled thy heart that thou shouldst lie to the Holy Ghost, and secrete something from the price of the estate?

Acts 8:22

Repent therefore of this thy wickedness, and pray to God, if haply this thought of thy heart may be forgiven thee.

Hebrews 4:13

Even creation is not invisible before him, but all things are naked, and fully displayed before his eyes, to whom we must give our account.

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 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

Matthew 9:4
And Jesus, seeing their thoughts, said, wherefore do ye imagine evil things in your hearts?
Luke 5:22
And Jesus knowing their reasoning, in reply said to them, Why do ye reason in your hearts?
Luke 6:8
Now he knew their thoughts, and said to the man who had the withered hand, Rise, and stand in the midst. And he arose, and stood up.
Luke 7:39
And when the Pharisee who had invited him saw it, he said within himself, If this man were a prophet, he would know who and what kind of a woman this is that toucheth him; for she is a notorious sinner.
John 2:24
But Jesus himself did not trust himself to them, because he knew them all,
John 6:64
But there are some of you who do not believe. For Jesus knew from the beginning who they were who did not believe, and who the person was that should betray him.
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 4:13
Even creation is not invisible before him, but all things are naked, and fully displayed before his eyes, to whom we must give our account.
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.

Why

Mark 7:21
For from within out of the heart of men proceed wicked reasonings, adulteries, whoredoms, murders,
Luke 24:38
And he said to them, Why are ye under such agitation of mind? and why do reasonings arise in your hearts?
Acts 5:3
But Peter said, O Ananias! why hath Satan filled thy heart that thou shouldst lie to the Holy Ghost, and secrete something from the price of the estate?
Acts 8:22
Repent therefore of this thy wickedness, and pray to God, if haply this thought of thy heart may be forgiven thee.

General references

John 20:23
whose soever sins ye forgive, they are forgiven them; and whose sins soever ye retain, they are retained.