Psalm 141:3
O Jehovah, set a guard at my mouth. Keep watch over the door of my lips.
Micah 7:5
Do not put your faith in your neighbor. Do not trust a friend! Guard your lips from her who lies in your bosom (is your intimate companion).
Psalm 39:1
([Psalm of David]) I said: I will guard my ways that I may not sin with my tongue. I will guard my mouth as with a muzzle while the wicked are in my presence.
Psalm 17:3-5
You have probed my heart. You have confronted me at night. You have tested me like silver, but you found nothing wrong. I have decided that my mouth will not sin.
Psalm 34:13
Keep your tongue from speaking evil and your lips from deceit.
Psalm 71:8
All day long I praise you and proclaim your glory.
James 1:26
If any man thinks he is religious, while he does not control his tongue but deceives his heart, this man's religion is vain (worthless) (useless).
James 3:2
We all stumble in many things. If any do not stumble in word, he is a perfect man, able to restrain (control) the whole body.