Proverbs 17:27

He who spares his words has knowledge. He who is even tempered is a man of understanding.

So, then, my beloved brothers, let every man be swift to hear, slow to speak, and slow to anger;

In the multitude of words there is no lack of disobedience, but he who restrains his lips does wisely.

He who is slow to anger has great understanding, but he who has a quick temper displays folly.

The heart of the righteous weighs answers, but the mouth of the wicked gushes out evil.

One who is slow to anger is better than the mighty; one who rules his spirit, than he who takes a city.

The words of the wise heard in quiet are better than the cry of him who rules among fools.

For in many things we all stumble. If anyone doesn't stumble in word, the same is a perfect man, able to bridle the whole body also.

Now the fruit of righteousness is sown in peace by those who make peace.

Treasury of Scripture Knowledge

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