Original Verse:
Proverbs Chapter 17 Verse 27He that hath knowledge spareth his words: and a man of understanding is of an excellent spirit.

Reference Verses:
James Chapter 1 Verse 19Wherefore, my beloved brethren, let every man be swift to hear, slow to speak, slow to wrath:
Proverbs Chapter 10 Verse 19In the multitude of words there wanteth not sin: but he that refraineth his lips is wise.
Ecclesiastes Chapter 9 Verse 17The words of wise men are heard in quiet more than the cry of him that ruleth among fools.
Proverbs Chapter 15 Verse 28The heart of the righteous studieth to answer: but the mouth of the wicked poureth out evil things.
James Chapter 3 Verse 2For in many things we offend all. If any man offend not in word, the same is a perfect man, and able also to bridle the whole body.
Proverbs Chapter 16 Verse 32He that is slow to anger is better than the mighty; and he that ruleth his spirit than he that taketh a city.
James Chapter 3 Verse 18And the fruit of righteousness is sown in peace of them that make peace.