The mouth of the just brings forth wisdom: but the fraudulent tongue shall be cut out.
Proverbs 10:11,13,20,21 The mouth of a righteous man is a well of life: but violence covers the mouth of the wicked...
Psalm 37:30 The mouth of the righteous speaks wisdom, and his tongue talks of judgment.
Psalm 31:18 Let the lying lips be put to silence; which speak grievous things proudly and contemptuously against the righteous.
Psalm 63:11 But the king shall rejoice in God; every one that swears by him shall glory: but the mouth of them that speak lies shall be stopped.
Psalm 120:3,4 What shall be given to you? or what shall be done to you, you false tongue...