Ecclesiastes 7:25

I turned around, and my heart sought to know and to search out, and to seek wisdom and the scheme of things, and to know that wickedness is stupidity, and that foolishness is madness.

Ecclesiastes 10:13

The beginning of the words of his mouth is foolishness; and the end of his talk is mischievous madness.

Genesis 34:7

The sons of Jacob came in from the field when they heard it. The men were grieved, and they were very angry, because he had done folly in Israel in lying with Jacob's daughter; a which thing ought not to be done.

Joshua 7:13

Get up. Sanctify the people, and say, 'Sanctify yourselves for tomorrow, for the LORD, the God of Israel, says, "There is a devoted thing in the midst of you, Israel. You cannot stand before your enemies until you take away the devoted thing from among you."

2 Samuel 13:12

She answered him, "No, my brother, do not force me. For no such thing ought to be done in Israel. Do not do this folly.

Proverbs 17:12

Let a bear robbed of her cubs meet a man, rather than a fool in his folly.

Proverbs 26:11

As a dog that returns to his vomit, so is a fool who repeats his folly.

Ecclesiastes 1:13-17

I applied my heart to seek and to search out by wisdom concerning all that is done under the sky. It is a heavy burden that God has given to the sons of men to be afflicted with.

Ecclesiastes 2:1-3

I said in my heart, "Come now, I will test you with mirth: therefore enjoy pleasure;" and behold, this also was vanity.

Ecclesiastes 2:12

I turned myself to consider wisdom, madness, and folly. For what can the man who comes after the king do? Just that which he has already done.

Ecclesiastes 2:15

Then said I in my heart, "As it happens to the fool, so will it happen even to me; and why was I then more wise?" Then said I in my heart that this also is vanity.

Ecclesiastes 2:20

Therefore I began to cause my heart to despair concerning all the labor in which I had labored under the sun.

Ecclesiastes 3:16-17

Moreover I saw under the sun, in the place of justice, that wickedness was there; and in the place of righteousness, that wickedness was there.

Ecclesiastes 7:27

Behold, this have I found, says the Preacher, one to another, to find out the scheme;

Ecclesiastes 9:1-3

For all this I laid to my heart, even to explore all this: that the righteous, and the wise, and their works, are in the hand of God; whether it is love or hatred, man doesn't know it; all is before them.

Jeremiah 12:1-2

You are righteous, LORD, when I contend with you; yet I would reason the cause with you: why does the way of the wicked prosper? Why are they all at ease who deal very treacherously?

2 Peter 2:3-9

In covetousness they will exploit you with deceptive words: whose sentence now from of old does not linger, and their destruction is not asleep.

2 Peter 3:3-9

knowing this first, that in the last days scoffers will come, mocking and walking after their own lusts,

Treasury of Scripture Knowledge

Summary

I applied mine heart to know, and to search, and to seek out wisdom, and the reason of things, and to know the wickedness of folly, even of foolishness and madness:

I applied mine heart

General references

Bible References

I applied mine heart

Ecclesiastes 1:13
I applied my heart to seek and to search out by wisdom concerning all that is done under the sky. It is a heavy burden that God has given to the sons of men to be afflicted with.
Ecclesiastes 2:1
I said in my heart, "Come now, I will test you with mirth: therefore enjoy pleasure;" and behold, this also was vanity.

The reason

Ecclesiastes 7:27
Behold, this have I found, says the Preacher, one to another, to find out the scheme;
Ecclesiastes 3:16
Moreover I saw under the sun, in the place of justice, that wickedness was there; and in the place of righteousness, that wickedness was there.
Ecclesiastes 9:1
For all this I laid to my heart, even to explore all this: that the righteous, and the wise, and their works, are in the hand of God; whether it is love or hatred, man doesn't know it; all is before them.
Jeremiah 12:1
You are righteous, LORD, when I contend with you; yet I would reason the cause with you: why does the way of the wicked prosper? Why are they all at ease who deal very treacherously?
2 Peter 2:3
In covetousness they will exploit you with deceptive words: whose sentence now from of old does not linger, and their destruction is not asleep.
2 Peter 3:3
knowing this first, that in the last days scoffers will come, mocking and walking after their own lusts,

Know

Ecclesiastes 9:3
This is an evil in all that is done under the sun, that there is one event to all: yes also, the heart of the sons of men is full of evil, and madness is in their heart while they live, and after that they go to the dead.
Ecclesiastes 10:13
The beginning of the words of his mouth is foolishness; and the end of his talk is mischievous madness.
Genesis 34:7
The sons of Jacob came in from the field when they heard it. The men were grieved, and they were very angry, because he had done folly in Israel in lying with Jacob's daughter; a which thing ought not to be done.
Joshua 7:13
Get up. Sanctify the people, and say, 'Sanctify yourselves for tomorrow, for the LORD, the God of Israel, says, "There is a devoted thing in the midst of you, Israel. You cannot stand before your enemies until you take away the devoted thing from among you."
2 Samuel 13:12
She answered him, "No, my brother, do not force me. For no such thing ought to be done in Israel. Do not do this folly.
Proverbs 17:12
Let a bear robbed of her cubs meet a man, rather than a fool in his folly.
Proverbs 26:11
As a dog that returns to his vomit, so is a fool who repeats his folly.

General references

Job 28:12
"But where shall wisdom be found? Where is the place of understanding?