Psalm 37:30

Pe The mouth of the righteous speaks wisdom, and his tongue brings forth judgment.

Psalm 71:15

My mouth shall show forth thy righteousness and thy salvation all the day, for I know not the numbers thereof.

Deuteronomy 6:7-9

and thou shalt repeat them diligently unto thy sons and shalt talk of them being in thy house and walking by the way, lying down in bed, and rising up;

Psalm 71:24

In the same manner my tongue shall talk of thy righteousness every day, for they are confounded, for they are brought unto shame, that seek my hurt.

Proverbs 10:21

The lips of the righteous feed many, but fools die for lack of wisdom.

Proverbs 10:31

The mouth of the just shall bring forth wisdom, but the perverse tongue shall be cut out.

Proverbs 15:7

The lips of the wise disperse wisdom, but the heart of the foolish does not so.

Proverbs 25:11-13

A word fitly spoken is like apples of gold inscribed with silver.

Proverbs 27:9

Ointment and perfume rejoice the heart, so does the sweetness of a man's friend by hearty counsel.

Matthew 12:35

The good man out of the good treasure of the heart brings forth good things, and the evil man out of the evil treasure brings forth evil things.

Ephesians 4:29

Let no corrupt word proceed out of your mouth, but that which is good for edification, that it may minister grace unto the hearers.

Colossians 4:6

Let your word be always with grace, seasoned with salt, that ye may know how ye ought to answer each one.

Treasury of Scripture Knowledge

Summary

The mouth of the righteous speaketh wisdom, and his tongue talketh of judgment.

Bible References

General references

Psalm 71:15
My mouth shall show forth thy righteousness and thy salvation all the day, for I know not the numbers thereof.
Deuteronomy 6:7
and thou shalt repeat them diligently unto thy sons and shalt talk of them being in thy house and walking by the way, lying down in bed, and rising up;
Proverbs 10:21
The lips of the righteous feed many, but fools die for lack of wisdom.
Proverbs 15:7
The lips of the wise disperse wisdom, but the heart of the foolish does not so.
Proverbs 25:11
A word fitly spoken is like apples of gold inscribed with silver.
Proverbs 27:9
Ointment and perfume rejoice the heart, so does the sweetness of a man's friend by hearty counsel.
Matthew 12:35
The good man out of the good treasure of the heart brings forth good things, and the evil man out of the evil treasure brings forth evil things.
Ephesians 4:29
Let no corrupt word proceed out of your mouth, but that which is good for edification, that it may minister grace unto the hearers.
Colossians 4:6
Let your word be always with grace, seasoned with salt, that ye may know how ye ought to answer each one.