Reckless words pierce like a sword, but the tongue of the wise brings healing. (Proverbs 12:18)

A fool gives full vent to his anger, but a wise man keeps himself under control. (Proverbs 29:11)

Series of Verses on Anger

Proverbs 12:16 - The vexation of a fool is known at once, but the prudent ignores an insult.

Psalm 37:8 - Refrain from anger, and forsake wrath! Fret not yourself; it tends only to evil.

Proverbs 15:1 - A soft answer turns away wrath, but a harsh word stirs up anger.

James 1:20 - For the anger of man does not produce the righteousness of God.

Proverbs 14:29 - Whoever is slow to anger has great understanding, but he who has a hasty temper exalts folly.

Ecclesiastes 7:9 - Be not quick in your spirit to become angry, for anger lodges in the bosom of fools.

Proverbs 19:11 - Good sense makes one slow to anger, and it is his glory to overlook an offense.

Proverbs 16:32 - Whoever is slow to anger is better than the mighty, and he who rules his spirit than he who takes a city.

Psalm 103:8 - The Lord is merciful and gracious, slow to anger and abounding in steadfast love.

Proverbs 15:18 - A hot-tempered man stirs up strife, but he who is slow to anger quiets contention.

Proverbs 16:29 - A man of violence entices his neighbor and leads him in a way that is not good.

Proverbs 14:17 - A man of quick temper acts foolishly, and a man of evil devices is hated.

Proverbs 22:24-25 - Make no friendship with a man given to anger, nor go with a wrathful man, Lest you learn his ways and entangle yourself in a snare.