Proverbs 13:16

Every prudent man works with knowledge, but a fool flaunts folly.

Proverbs 15:2

The tongue of the wise utters knowledge rightly, but the mouth of fools pours out folly.

Ecclesiastes 10:3

Yea also, when the fool walks by the way, his understanding fails him, and he says to everyone [that] he is a fool.

1 Samuel 25:10-11

And Nabal answered David's servants, and said, Who is David? And who is the son of Jesse? There are many servants now-a-days who break away every man from his master.

1 Samuel 25:17

Now therefore know and consider what thou will do, for evil is determined against our master, and against all his house. For he is such a worthless fellow that [a man] cannot speak to him.

1 Samuel 25:25

Let not my lord, I pray thee, regard this worthless fellow, even Nabal, for as his name is, so is he. Nabal is his name, and folly is with him. But I thy handmaid saw not the young men of my lord whom thou sent.

Psalm 112:5

It is well with the man who deals graciously and lends. He shall maintain his cause in judgment,

Proverbs 12:22-23

Lying lips are an abomination to LORD, but those who deal truly are his delight.

Proverbs 21:24

The proud and haughty man, scoffer is his name. He works in the arrogance of pride.

Isaiah 52:13

Behold, my servant shall deal wisely. He shall be exalted and lifted up, and shall be very high.

Matthew 10:16

Behold, I send you forth as sheep in the midst of wolves. Become ye therefore wise as serpents, and innocent as doves.

Romans 16:19

For your obedience reached to all men. Therefore I rejoice over you, but I want you to be indeed wise in the good and pure in the evil.

1 Corinthians 14:20

Brothers, become not children in your thoughts. Instead be childlike in wickedness, but in your thoughts become mature.

Ephesians 5:17

Because of this do not become foolish, but understanding what is the will of the Lord.

Treasury of Scripture Knowledge

Summary

Every prudent man dealeth with knowledge: but a fool layeth open his folly.

General references

Bible References

Prudent

Proverbs 12:22
Lying lips are an abomination to LORD, but those who deal truly are his delight.
Proverbs 15:2
The tongue of the wise utters knowledge rightly, but the mouth of fools pours out folly.
Proverbs 21:24
The proud and haughty man, scoffer is his name. He works in the arrogance of pride.
Psalm 112:5
It is well with the man who deals graciously and lends. He shall maintain his cause in judgment,
Isaiah 52:13
Behold, my servant shall deal wisely. He shall be exalted and lifted up, and shall be very high.
Matthew 10:16
Behold, I send you forth as sheep in the midst of wolves. Become ye therefore wise as serpents, and innocent as doves.
Romans 16:19
For your obedience reached to all men. Therefore I rejoice over you, but I want you to be indeed wise in the good and pure in the evil.
1 Corinthians 14:20
Brothers, become not children in your thoughts. Instead be childlike in wickedness, but in your thoughts become mature.
Ephesians 5:17
Because of this do not become foolish, but understanding what is the will of the Lord.

A fool

1 Samuel 25:10
And Nabal answered David's servants, and said, Who is David? And who is the son of Jesse? There are many servants now-a-days who break away every man from his master.
Ecclesiastes 10:3
Yea also, when the fool walks by the way, his understanding fails him, and he says to everyone [that] he is a fool.

General references

Proverbs 14:33
Wisdom rests in the heart of him who has understanding, but [a thing] in the inward part of fools is made known.