Proverbs 13:3

He who guards his mouth keeps his life. He who opens wide his lips shall have destruction.

Proverbs 21:23

He who keeps his mouth and his tongue keeps his soul from troubles.

Proverbs 12:13

A wicked man is snared by the transgression of [his] lips, but the righteous shall come out of trouble.

Proverbs 18:7

A fool's mouth is his destruction, and his lips are the snare of his soul.

Proverbs 18:21

Death and life are in the power of the tongue, and those who love it shall eat the fruit of it.

Psalm 39:1

I said, I will take heed to my ways, that I sin not with my tongue. I will keep my mouth with a bridle while the wicked man is before me.

Proverbs 10:19

Transgression is not lacking in the multitude of words, but he who refrains his lips does wisely.

Proverbs 20:19

He who goes about as a tale-bearer reveals secrets. Therefore do not associate with him who opens wide his lips.

Matthew 12:36-37

But I say to you, that every idle word, whatever men may speak, they will render account about it in the day of judgment.

James 1:26

If any man among you seems to be religious, not bridling his tongue but deceiving his heart, this man's religion is futile.

James 3:2-12

For we all stumble in many things. If any man does not stumble in word, this is a perfect man, able also to bridle the whole body.

Treasury of Scripture Knowledge

Summary

He that keepeth his mouth keepeth his life: but he that openeth wide his lips shall have destruction.

Bible References

General references

Proverbs 10:19
Transgression is not lacking in the multitude of words, but he who refrains his lips does wisely.
Proverbs 12:13
A wicked man is snared by the transgression of [his] lips, but the righteous shall come out of trouble.
Proverbs 21:23
He who keeps his mouth and his tongue keeps his soul from troubles.
Psalm 39:1
I said, I will take heed to my ways, that I sin not with my tongue. I will keep my mouth with a bridle while the wicked man is before me.
Matthew 12:36
But I say to you, that every idle word, whatever men may speak, they will render account about it in the day of judgment.
James 1:26
If any man among you seems to be religious, not bridling his tongue but deceiving his heart, this man's religion is futile.
James 3:2
For we all stumble in many things. If any man does not stumble in word, this is a perfect man, able also to bridle the whole body.