Proverbs 10:11
A fountain of life [is] a mouth of righteousness, and a mouth of wickedness conceals violence.
Proverbs 10:6
Blessings [belong] to the head of the righteous, but the mouth of the wicked conceals violence.
Proverbs 13:14
The teaching of the wise [is] a fountain of life, [in order] to avoid the snares of death.
Proverbs 18:4
Deep waters [are] words of the mouth of a man; a gushing stream [is] a fountain of wisdom.
Psalm 37:30-31
[The] mouth of [the] righteous utters wisdom, and his tongue speaks justice.
Psalm 107:42
[The] upright see [it] and are glad, and all wickedness shuts its mouth.
Proverbs 10:20-21
Choice silver is a tongue of righteousness, a heart of wickedness is {of little worth}.
Proverbs 10:32
The lips of the righteous know [the] acceptable, but the mouth of the wicked, the perverse.
Proverbs 15:7
The lips of the wise will spread knowledge, but the heart of fools, not so.
Proverbs 16:22-24
A fountain of life is wisdom for its owner, but the instruction of fools is folly.
Proverbs 20:15
There is gold and many costly stones, but precious jewels are lips of knowledge.
Ecclesiastes 10:12-14
The wise man [wins] favor by the words of his mouth, but the fool is devoured by his own lips.
Matthew 12:34-37
Offspring of vipers! How are you able to say good things [when you] are evil? For from the abundance of the heart the mouth speaks.
Ephesians 4:29
{No rotten word must proceed} from your mouth, but only something good for the building up of the need, in order that it may give grace to those who hear,
James 3:5-8
So also the tongue is a small member [of the body] and boasts great [things]. Behold how small a fire sets ablaze how great a forest!