Proverbs 15:2

The tongue of the wise useth knowledge aright; but the mouth of the foolish poureth out folly.

Proverbs 12:23

A prudent man concealeth knowledge; but the heart of the foolish proclaimeth folly.

Proverbs 13:16

Every prudent man acteth with knowledge; but the foolish layeth open his folly.

Proverbs 15:28

The heart of a righteous man studieth to answer; but the mouth of the wicked poureth out evil things.

Psalm 45:1

{To the chief Musician. Upon Shoshannim. Of the sons of Korah. An instruction; a song of the Beloved.} My heart is welling forth with a good matter: I say what I have composed touching 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 who say they doth hear?

Proverbs 15:23

A man hath joy by the answer of his mouth; and a word in its season, how good is it!

Proverbs 16:23

The heart of the wise maketh his mouth intelligent, and upon his lips increaseth learning.

Proverbs 25:11-12

As apples of gold in pictures of silver, is a word spoken in season.

Ecclesiastes 10:12-13

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

Isaiah 50:4

The Lord Jehovah hath given me the tongue of the instructed, that I should know how to succour by a word him that is weary. He wakeneth morning by morning, he wakeneth mine ear to hear as the instructed.

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 hath joy by the answer of his mouth; and a word in its season, how good is it!
Proverbs 12:23
A prudent man concealeth knowledge; but the heart of the foolish proclaimeth folly.
Proverbs 13:16
Every prudent man acteth with knowledge; but the foolish layeth open his folly.
Proverbs 16:23
The heart of the wise maketh his mouth intelligent, and upon his lips increaseth learning.
Proverbs 25:11
As apples of gold in pictures of silver, is a word spoken in season.
Psalm 45:1
{To the chief Musician. Upon Shoshannim. Of the sons of Korah. An instruction; a song of the Beloved.} My heart is welling forth with a good matter: I say what I have composed touching 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 swallow up himself.
Isaiah 50:4
The Lord Jehovah hath given me the tongue of the instructed, that I should know how to succour by a word him that is weary. He wakeneth morning by morning, he wakeneth mine ear to hear as the instructed.

Poureth

Psalm 59:7
Behold, they belch out with their mouth; swords are in their lips: for who say they doth hear?

General references

Proverbs 14:33
Wisdom resteth in the heart of the intelligent man; but that which is in the foolish maketh itself known.
Proverbs 17:28
Even a fool when he holdeth his peace is reckoned wise, and he that shutteth his lips, intelligent.
Matthew 15:18
but the things which go forth out of the mouth come out of the heart, and those defile man.