Proverbs 10:19

When there are many words, transgression is unavoidable,
But he who restrains his lips is wise.

James 3:2

For we all stumble in many ways. If anyone does not stumble in what he says, he is a perfect man, able to bridle the whole body as well.

James 1:19

This you know, my beloved brethren. But everyone must be quick to hear, slow to speak and slow to anger;

Psalm 39:1

For the choir director, for Jeduthun. A Psalm of David.
I said, “I will guard my ways
That I may not sin with my tongue;
I will guard my mouth as with a muzzle
While the wicked are in my presence.”

Ecclesiastes 5:3

For the dream comes through much effort and the voice of a fool through many words.

Proverbs 17:27-28

He who restrains his words has knowledge,
And he who has a cool spirit is a man of understanding.

Ecclesiastes 10:13-14

the beginning of his talking is folly and the end of it is wicked madness.

Treasury of Scripture Knowledge

Summary

Proverbs 10:19

In the multitude of words there wanteth not sin: but he that refraineth his lips is wise.

But

General references

Proverbs 13:3

Proverbs 21:23

Bible References

But

He who restrains his words has knowledge,
And he who has a cool spirit is a man of understanding.

This you know, my beloved brethren. But everyone must be quick to hear, slow to speak and slow to anger;

For we all stumble in many ways. If anyone does not stumble in what he says, he is a perfect man, able to bridle the whole body as well.

General references

The one who guards his mouth preserves his life;
The one who opens wide his lips comes to ruin.

He who guards his mouth and his tongue,
Guards his soul from troubles.