Set a guard over my mouth, Lord; keep watch over the door of my lips.
keep your tongue from evil and your lips from telling lies.
I said, “I will watch my ways and keep my tongue from sin; I will put a muzzle on my mouth while in the presence of the wicked.”
So I remained utterly silent, not even saying anything good. But my anguish increased;
My mouth is filled with your praise, declaring your splendor all day long.
Do not trust a neighbor; put no confidence in a friend. Even with the woman who lies in your embrace guard the words of your lips.
Those who consider themselves religious and yet do not keep a tight rein on their tongues deceive themselves, and their religion is worthless.
We all stumble in many ways. Anyone who is never at fault in what they say is perfect, able to keep their whole body in check.