Proverbs 15:2

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

Proverbs 12:23

A prudent man conceals knowledge, but the heart of fools proclaims foolishness.

Proverbs 13:16

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

Proverbs 15:28

The heart of a righteous man meditates to answer, but the mouth of the wicked pours out evil things.

Psalm 45:1

My heart overflows with a good matter. I speak the things which I have made concerning the king. My tongue is the pen of a ready writer.

Psalm 59:7

Behold, they belch out with their mouth. Swords are in their lips, for [they say], Who hears?

Proverbs 15:23

A man has joy in the answer of his mouth, and a word in due season, how good it is!

Proverbs 16:23

The heart of the wise instructs his mouth, and adds learning to his lips.

Proverbs 25:11-12

A word fitly spoken is apples of gold in a network of silver.

Ecclesiastes 10:12-13

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

Isaiah 50:4

Lord LORD has given me the tongue of those who are taught, that I may know how to sustain with words him who is weary. He awakens morning by morning. He awakens my ear to hear as those who are taught.

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 in the answer of his mouth, and a word in due season, how good it is!
Proverbs 12:23
A prudent man conceals knowledge, but the heart of fools proclaims foolishness.
Proverbs 13:16
Every prudent man works with knowledge, but a fool flaunts folly.
Proverbs 16:23
The heart of the wise instructs his mouth, and adds learning to his lips.
Proverbs 25:11
A word fitly spoken is apples of gold in a network of silver.
Psalm 45:1
My heart overflows with a good matter. I speak the things which I have made concerning the king. My tongue is the pen of a ready writer.
Ecclesiastes 10:12
The words of a wise man's mouth are gracious, but the lips of a fool will swallow himself up.
Isaiah 50:4
Lord LORD has given me the tongue of those who are taught, that I may know how to sustain with words him who is weary. He awakens morning by morning. He awakens my ear to hear as those who are taught.

Poureth

Psalm 59:7
Behold, they belch out with their mouth. Swords are in their lips, for [they say], Who hears?

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.
Proverbs 17:28
Even a fool, when he holds his peace, is considered wise. When he shuts his lips, he is prudent.
Matthew 15:18
But the things coming out of the mouth come forth from the heart, and those things defile the man.