Proverbs 16:23

The heart of the wise instructs his mouth
And adds persuasiveness to his lips.

Proverbs 15:28

The heart of the righteous ponders how to answer,
But the mouth of the wicked pours out evil things.

Psalm 37:30-31

The mouth of the righteous utters wisdom,
And his tongue speaks justice.

Psalm 45:1

For the choir director; according to the Shoshannim. A Maskil of the sons of Korah. A Song of Love.
My heart overflows with a good theme;
I address my verses to the King;
My tongue is the pen of a ready writer.

Proverbs 22:17-18

Incline your ear and hear the words of the wise,
And apply your mind to my knowledge;

Matthew 12:34-35

You brood of vipers, how can you, being evil, speak what is good? For the mouth speaks out of that which fills the heart.

Colossians 3:16

Let the word of Christ richly dwell within you, with all wisdom teaching and admonishing one another with psalms and hymns and spiritual songs, singing with thankfulness in your hearts to God.

Treasury of Scripture Knowledge

Summary

The heart of the wise teacheth his mouth, and addeth learning to his lips.

Bible References

Heart

Proverbs 15:28
The heart of the righteous ponders how to answer,
But the mouth of the wicked pours out evil things.
Proverbs 22:17
Incline your ear and hear the words of the wise,
And apply your mind to my knowledge;
Psalm 37:30
The mouth of the righteous utters wisdom,
And his tongue speaks justice.
Psalm 45:1
For the choir director; according to the Shoshannim. A Maskil of the sons of Korah. A Song of Love.
My heart overflows with a good theme;
I address my verses to the King;
My tongue is the pen of a ready writer.
Matthew 12:34
You brood of vipers, how can you, being evil, speak what is good? For the mouth speaks out of that which fills the heart.
Colossians 3:16
Let the word of Christ richly dwell within you, with all wisdom teaching and admonishing one another with psalms and hymns and spiritual songs, singing with thankfulness in your hearts to God.