Proverbs 10:32

The lips of the righteous speak what is acceptable. The mouth of the wicked speaks perversion.

Ecclesiastes 12:10

The preacher sought to find out acceptable words. That which was written was upright, even words of truth.

Proverbs 2:12

It will deliver you from the way of evil, from the man who speaks perverse things.

Proverbs 11:11

The city is exalted by the blessing of the upright. The mouth of the wicked ruins the city.

Proverbs 12:6

The words of the wicked lie in wait for blood, but the mouth of the upright delivers them.

Proverbs 12:18

There is one who speaks rashly like the piercing of a sword. The tongue of the wise brings a cure.

Proverbs 15:2

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

Proverbs 15:28

The heart of the righteous studies how to answer. The mouth of the wicked pours out evil things.

Proverbs 18:6-8

A fool's lips want to argue. His mouth calls for blows.

Ecclesiastes 10:12

The words of a wise man's mouth are gracious; but the lips of a fool will swallow up himself.

Daniel 4:27

Let my counsel be acceptable to you O King. Stop your sins by being righteous and your iniquities by showing mercy to the poor. May there be a lengthening of your prosperity.

Titus 2:8

Have sound speech that cannot be condemned so the man opposing us may be ashamed and have nothing bad to say about us.

Treasury of Scripture Knowledge

Summary

The lips of the righteous know what is acceptable: but the mouth of the wicked speaketh frowardness.

General references

Bible References

Know

Ecclesiastes 12:10
The preacher sought to find out acceptable words. That which was written was upright, even words of truth.
Daniel 4:27
Let my counsel be acceptable to you O King. Stop your sins by being righteous and your iniquities by showing mercy to the poor. May there be a lengthening of your prosperity.
Titus 2:8
Have sound speech that cannot be condemned so the man opposing us may be ashamed and have nothing bad to say about us.

General references

Matthew 15:18
That which comes out of the mouth, comes from the heart and makes a man unclean.