To watch over mouth and tongue is to keep out of trouble.
Set a guard over my mouth, O Lord; keep watch over the door of my lips.
When words are many, transgression is not lacking, but the prudent are restrained in speech.
The evil are ensnared by the transgression of their lips, but the righteous escape from trouble.
Those who guard their mouths preserve their lives; those who open wide their lips come to ruin.
The highway of the upright avoids evil; those who guard their way preserve their lives.
Death and life are in the power of the tongue, and those who love it will eat its fruits.
If any think they are religious and do not bridle their tongues but deceive their hearts, their religion is worthless.