Proverbs 15:2

The tongue of the wise commends knowledge, but the mouth of fools gush out folly.

Proverbs 12:23

A prudent man keeps his knowledge, but the hearts of fools proclaim foolishness.

Proverbs 13:16

Every prudent man acts from knowledge, but a fool exposes folly.

Proverbs 15:28

The heart of the righteous weighs answers, but the mouth of the wicked gushes out evil.

Psalm 45:1

My heart overflows with a noble theme. I recite my verses for the king. My tongue is like the pen of a skillful writer.

Psalm 59:7

Behold, they spew with their mouth. Swords are in their lips, "For," they say, "who hears us?"

Proverbs 15:23

Joy comes to a man with the reply of his mouth. How good is a word at the right time.

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 like apples of gold in settings of silver.

Ecclesiastes 10:12-13

The words of a wise man's mouth are gracious; but a fool is swallowed by his own lips.

Isaiah 50:4

The Lord GOD has given me the tongue of those who are taught, that I may know how to sustain with a word him who is weary: he wakens morning by morning, he wakens 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
Joy comes to a man with the reply of his mouth. How good is a word at the right time.
Proverbs 12:23
A prudent man keeps his knowledge, but the hearts of fools proclaim foolishness.
Proverbs 13:16
Every prudent man acts from knowledge, but a fool exposes 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 like apples of gold in settings of silver.
Psalm 45:1
My heart overflows with a noble theme. I recite my verses for the king. My tongue is like the pen of a skillful writer.
Ecclesiastes 10:12
The words of a wise man's mouth are gracious; but a fool is swallowed by his own lips.
Isaiah 50:4
The Lord GOD has given me the tongue of those who are taught, that I may know how to sustain with a word him who is weary: he wakens morning by morning, he wakens my ear to hear as those who are taught.

Poureth

Psalm 59:7
Behold, they spew with their mouth. Swords are in their lips, "For," they say, "who hears us?"

General references

Proverbs 14:33
Wisdom rests in the heart of one who has understanding, and is even made known in the inward part of fools.
Proverbs 17:28
Even a fool, when he keeps silent, is counted wise. When he shuts his lips, he is thought to be discerning.
Matthew 15:18
But the things which proceed out of the mouth come out of the heart, and they defile the man.