Psalm 141:3
Set a watch, O LORD, before my mouth, and keep the door of my lips.
Micah 7:5
Let no man believe his friend, nor put his confidence in a prince. Keep the door of thy mouth, from her that lieth in thy bosom:
Psalm 39:1
{To the Chanter, for praising, a Psalm of David} I said, "I will take heed to my ways, that I offend not in my tongue. I will keep my mouth as it were with a bridle, while the ungodly is in my sight."
Psalm 17:3-5
Thou hast proved and visited mine heart in the night season; thou hast tried me, and shalt find no wickedness in me, for I am utterly purposed that my mouth shall not offend.
Psalm 34:13
Keep thy tongue from evil, and thy lips, that they speak no guile.
Psalm 71:8
O let my mouth be filled with thy praise, that I may sing of thy glory and honour all the day long.
James 1:26
If any man among you seem devout, and refrain not his tongue: but deceive his own heart, this man's devotion is in vain.
James 3:2
For in many things we sin all. If a man sin not in word, the same is a perfect man and able to tame all the body.