Proverbs 13:3

He that keeps his mouth keeps his life: but he that opens wide his lips shall have destruction.

Proverbs 21:23

Whosoever keeps his mouth and his tongue keeps his soul from troubles.

Proverbs 12:13

The wicked is snared by the transgression of his lips: but the just shall escape from 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 they that love it shall eat the fruit thereof.

Psalm 39:1

[To the Chief Musician. To Jeduthun. A Psalm of David.] 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 are before me.

Proverbs 10:19

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

Proverbs 20:19

He that goes about as a talebearer reveals secrets: therefore associate not with him who flatters with his lips.

Matthew 12:36-37

But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.

James 1:26

If any man among you seems to be religious, and bridles not his tongue, but deceives his own heart, this man's religion is vain.

James 3:2-12

For in many things we all offend. If any man offend not in word, the same is a perfect man, and 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
In the multitude of words there lacks not sin: but he that refrains his lips is wise.
Proverbs 12:13
The wicked is snared by the transgression of his lips: but the just shall escape from trouble.
Proverbs 21:23
Whosoever keeps his mouth and his tongue keeps his soul from troubles.
Psalm 39:1
[To the Chief Musician. To Jeduthun. A Psalm of David.] 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 are before me.
Matthew 12:36
But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.
James 1:26
If any man among you seems to be religious, and bridles not his tongue, but deceives his own heart, this man's religion is vain.
James 3:2
For in many things we all offend. If any man offend not in word, the same is a perfect man, and able also to bridle the whole body.