Proverbs 12:16, 23
A fool's anger is known at once, but a prudent man overlooks an insult. . . .

Proverbs 14:33
Wisdom rests in the heart of the discerning; even in the hearts of fools she is known.

Judges 16:17
he told her all that was in his heart: "My hair has never been cut, because I have been a Nazirite to God from my mother's womb. If I am shaved, my strength will leave me, and I will become as weak as any other man."

Amos 5:13
Therefore, the prudent keep silent in such times, for the days are evil.

Micah 7:5
Do not rely on a friend; do not trust in a companion. Seal the doors of your mouth from her who lies in your arms.