Proverbs 10:19

In many words, transgression is not lacking, but he who restrains his lips is prudent.

James 3:2

For we all stumble [in] many [ways]. If anyone does not stumble in what he says, he [is] a perfect individual, able to hold in check his whole body also.

James 1:19

Understand [this], my dear brothers: every person must be quick to hear, slow to speak, slow to anger,

Psalm 39:1

I said, "I will guard my ways {that I may not sin} with my tongue. I will keep a muzzle over my mouth as long as [the] wicked [are] before me."

Ecclesiastes 5:3

For a dream comes with many cares, and the voice of a fool with many words.

Proverbs 17:27-28

He who spares his sayings knows knowledge, and a cool spirit is a man of understanding.

Ecclesiastes 10:13-14

He begins by saying what is foolish and ends by uttering what is wicked delusion.

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 spares his sayings knows knowledge, and a cool spirit is a man of understanding.

I said, "I will guard my ways {that I may not sin} with my tongue. I will keep a muzzle over my mouth as long as [the] wicked [are] before me."

Understand [this], my dear brothers: every person must be quick to hear, slow to speak, slow to anger,

For we all stumble [in] many [ways]. If anyone does not stumble in what he says, he [is] a perfect individual, able to hold in check his whole body also.

General references

He who keeps his mouth guards his life; he who opens his lips, ruin [belongs] to him.

He who guards his mouth and his tongue, he guards his life from danger.