Proverbs 13:3
He who guards his lips guards his life, but he who speaks
rashly will come to ruin.
Proverbs 17:14
Starting a quarrel is like breaching a dam; so drop the matter
before a dispute breaks out.
Proverbs 17:27
A man of knowledge uses words with restraint, and a man of
understanding is even-tempered. (28)
Even a fool is thought wise if he keeps silent, and discerning if
he holds his tongue.
Proverbs 18:2
A fool finds no pleasure
in understanding but delights in airing his own opinions.
Proverbs 18:21
The tongue has the power of life and death, and those who
love it will eat its fruit.
Proverbs 20:19
A gossip betrays a confidence; so avoid a man who talks too
much.
Proverbs 21:23
He who guards his mouth and his tongue keeps himself from
calamity.
Proverbs 29:20
Do you see a man who speaks in haste? There is more hope for
a fool than for him.
Proverbs 30:5
Every word of God is flawless . . .
(6)
Do not add to his words, or he will rebuke you and prove you
a liar.
Psalms 17:3
Though you probe my heart and examine me at night, though you
test me, you will find nothing; I have resolved that my mouth
will not sin.
Proverbs 10:19
When words are many, sin is not absent, but he who holds his
tongue is wise.
See also Positive use of the tongue