Proverbs 15:2

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

Proverbs 12:23

A prudent man conceals knowledge. The heart of fools proclaims foolishness.

Proverbs 13:16

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

Proverbs 15:28

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

Psalm 45:1

Beautiful words fill my mind and stir my heart, as I compose this song for the king. Like the pen of a skilful writer (copyist) my tongue is ready with a poem.

Psalm 59:7

See what pours out of their mouths, swords from their lips! They think: Who will hear us?

Proverbs 15:23

A man has joy by the answer of his mouth: and a word spoken at the right time, how good it is!

Proverbs 16:23

The heart of the wise teaches his mouth. It adds learning to his lips.

Proverbs 25:11-12

A word fitly spoken is like apples of gold in settings of silver.

Ecclesiastes 10:12-13

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

Isaiah 50:4

The Lord Jehovah will teach me what to say, so I will know how to encourage tired people. Morning after morning he will wake me to listen like a student.

Treasury of Scripture Knowledge

Summary

The tongue of the wise useth knowledge aright: but the mouth of fools poureth out foolishness.

Poureth

Bible References

Tongue

Proverbs 15:23
A man has joy by the answer of his mouth: and a word spoken at the right time, how good it is!
Proverbs 12:23
A prudent man conceals knowledge. The heart of fools proclaims foolishness.
Proverbs 13:16
Every prudent man acts with knowledge. A fool displays his folly.
Proverbs 16:23
The heart of the wise teaches his mouth. It adds learning to his lips.
Proverbs 25:11
A word fitly spoken is like apples of gold in settings of silver.
Psalm 45:1
Beautiful words fill my mind and stir my heart, as I compose this song for the king. Like the pen of a skilful writer (copyist) my tongue is ready with a poem.
Ecclesiastes 10:12
The words of a wise man's mouth are gracious; but the lips of a fool will swallow up himself.
Isaiah 50:4
The Lord Jehovah will teach me what to say, so I will know how to encourage tired people. Morning after morning he will wake me to listen like a student.

Poureth

Psalm 59:7
See what pours out of their mouths, swords from their lips! They think: Who will hear us?

General references

Proverbs 14:33
Wisdom rests in the heart of the man with understanding. That in the heart of fools is made known.
Proverbs 17:28
Even a fool, when he holds his peace, is counted wise! He who shuts his mouth is esteemed a man of understanding.
Matthew 15:18
That which comes out of the mouth, comes from the heart and makes a man unclean.