Proverbs 17:27

He is wise and discreet that tempereth his words; and he is a man of understanding, that maketh much of his spirit.

James 1:19

Wherefore, dear brethren, let every man be swift to hear, slow to speak, and slow to wrath.

Proverbs 10:19

Where much babbling is, there must needs be offense; he that refraineth his lips is wisest of all.

Proverbs 14:29

Patience is a token of wisdom; but wrath and hasty displeasure is a token of foolishness.

Proverbs 15:28

A righteous man museth in his mind how to do good; but the mind of the ungodly imagineth how he may do harm.

Proverbs 16:32

A patient man is better than one strong; and he that can rule himself, is more worth than he that winneth a city.

Ecclesiastes 9:17

A wise man's counsel that is followed in silence, is far above the crying of a captain among fools.

James 3:2

For in many things we sin all. If a man sin not in word, the same is a perfect man and able to tame all the body.

James 3:18

Yea, and the fruit of righteousness is sown in peace, of them that maintain peace.

Treasury of Scripture Knowledge

Summary

He that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.

General references

Bible References

Spareth

Proverbs 10:19
Where much babbling is, there must needs be offense; he that refraineth his lips is wisest of all.
Proverbs 15:28
A righteous man museth in his mind how to do good; but the mind of the ungodly imagineth how he may do harm.
James 1:19
Wherefore, dear brethren, let every man be swift to hear, slow to speak, and slow to wrath.
James 3:2
For in many things we sin all. If a man sin not in word, the same is a perfect man and able to tame all the body.

An excellent spirit

Proverbs 16:32
A patient man is better than one strong; and he that can rule himself, is more worth than he that winneth a city.
Ecclesiastes 9:17
A wise man's counsel that is followed in silence, is far above the crying of a captain among fools.
James 3:18
Yea, and the fruit of righteousness is sown in peace, of them that maintain peace.

General references

Proverbs 21:23
Whoso keepeth his mouth and his tongue; the same keepeth his soul from troubles.