Proverbs 13:16

Every prudent man acts with knowledge. A fool displays his folly.

Proverbs 15:2

The tongue of the wise uses knowledge properly. The mouth of fools pours out foolishness.

Ecclesiastes 10:3

When he who is a fool walks along the path, his wisdom fails him, and he says to every one that he is a fool.

1 Samuel 25:10-11

This is what he said: Who does this David think he is? That son of Jesse is just one more slave on the run from his master. There are too many of them now days.

1 Samuel 25:17

Consider what you should do because our master and his whole household are doomed. He is such a worthless man that it is useless to talk to him.

1 Samuel 25:25

You should not take this worthless person Nabal seriously. He is like his name. His name is Nabal (Godless Fool). He is foolish. But I did not see the young men you sent.

Psalm 112:5

All goes well for the person who is generous and lends willingly. He earns an honest living.

Proverbs 12:22-23

Lying lips are an abomination to Jehovah. Those who deal truly are his delight.

Proverbs 21:24

Proud and haughty mocker is his name. He acts with overbearing pride.

Isaiah 52:13

My servant will act wisely. He will be raised, lifted up and highly exalted.

Matthew 10:16

I send you as sheep in the midst of wolves. Be wise as serpents and harmless as doves.

Romans 16:19

Your obedience has come to our attention abroad. I am glad therefore on your behalf. Yet I would have you wise to that which is good and simple concerning evil.

1 Corinthians 14:20

Brothers, do not be like children in understanding. When it comes to evil be innocent children but in your thinking be mature adults.

Ephesians 5:17

Do not be foolish, but understand (perceive) what the will of Jehovah is.

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 Jehovah. Those who deal truly are his delight.
Proverbs 15:2
The tongue of the wise uses knowledge properly. The mouth of fools pours out foolishness.
Proverbs 21:24
Proud and haughty mocker is his name. He acts with overbearing pride.
Psalm 112:5
All goes well for the person who is generous and lends willingly. He earns an honest living.
Isaiah 52:13
My servant will act wisely. He will be raised, lifted up and highly exalted.
Matthew 10:16
I send you as sheep in the midst of wolves. Be wise as serpents and harmless as doves.
Romans 16:19
Your obedience has come to our attention abroad. I am glad therefore on your behalf. Yet I would have you wise to that which is good and simple concerning evil.
1 Corinthians 14:20
Brothers, do not be like children in understanding. When it comes to evil be innocent children but in your thinking be mature adults.
Ephesians 5:17
Do not be foolish, but understand (perceive) what the will of Jehovah is.

A fool

1 Samuel 25:10
This is what he said: Who does this David think he is? That son of Jesse is just one more slave on the run from his master. There are too many of them now days.
Ecclesiastes 10:3
When he who is a fool walks along the path, his wisdom fails him, and he says to every one that he is a fool.

General references

Proverbs 14:33
Wisdom rests in the heart of the man with understanding. That in the heart of fools is made known.