Proverbs 10:31
The mouth of the righteous brings forth wisdom, but a tongue of perversity will be cut off.
Psalm 37:30
[The] mouth of [the] righteous utters wisdom, and his tongue speaks justice.
Proverbs 10:13
On the lips of one who has understanding, wisdom is found, but a rod [is] for the back of one who lacks {sense}.
Psalm 31:18
Let lying lips be dumb, that speak against [the] righteous unrestrained with arrogance and contempt.
Psalm 63:11
However, the king will rejoice in God. Everyone who swears an oath by him will boast, because [the] mouth of [the] liars will be stopped.
Psalm 120:3-4
What shall be given to you, and what more shall be done to you, deceitful tongue?
Proverbs 10:11
A fountain of life [is] a mouth of righteousness, and a mouth of wickedness conceals violence.
Proverbs 10:20-21
Choice silver is a tongue of righteousness, a heart of wickedness is {of little worth}.