Proverbs 10:32

The lips of the just one shall know acceptance: and the mouth of the unjust, perverseness.

Ecclesiastes 12:10

The preacher sought to find words: of delight: and that written was straight, words of truth.

Proverbs 2:12

To deliver thee from the evil way, from the man speaking deceit;

Proverbs 11:11

By the blessing of the upright the city shall be exalted: and by the mouth of the unjust it shall be overthrown.

Proverbs 12:6

The words of the unjust are the lying in wait of blood: and the mouth of the upright shall deliver them.

Proverbs 12:18

There is he talking idly as the piercings of the sword: and the tongue of the wise is healing.

Proverbs 15:2

The tongue of the wise will make knowledge good: and the mouth of the foolish will gush forth folly.

Proverbs 15:28

The heart of the just one shall meditate to answer: and the mouth of the unjust shall gush out evil.

Proverbs 18:6-8

The lips of the foolish one will come into contention, and his mouth will call for blows.

Ecclesiastes 10:12

The words of the wise one's mouth, grace; and the lips of the foolish one shall swallow him down.

Daniel 4:27

Wherefore, O king, my counsel shall be pleasant to thee, and break off thy sins by justice, and thine iniquities in compassionating the poor; if it shall be a lengthening to thy peace.

Titus 2:8

The word sound, not to be condemned; that he from the opposite may be changed, having nothing bad to say of you.

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 words: of delight: and that written was straight, words of truth.
Daniel 4:27
Wherefore, O king, my counsel shall be pleasant to thee, and break off thy sins by justice, and thine iniquities in compassionating the poor; if it shall be a lengthening to thy peace.
Titus 2:8
The word sound, not to be condemned; that he from the opposite may be changed, having nothing bad to say of you.

General references

Matthew 15:18
But the things going forth out of the mouth come from the heart, and these pollute the man.