A baker's dozen of verses about anger;

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

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

Ephesians 4:31 " Let all bitterness and wrath and anger and clamor and slander be put away from you, along with all malice."

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

James 1:19-20 "Know this, my beloved brothers; let every person be quick to hear, slow to speak, slow to anger; for the anger of man does not produce the righteousness of God."

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

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."

Proverbs 29:11 "A fool gives full vent to his spirit, but a wise man quietly holds it back."

Ephesians 4:26-27 "Be angry and do not sin; do not let the sun go down on your anger, and give no opportunity to the devil."

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

Colossians 3:8 "But now you must put them all away: anger, wrath, malice, slander, and obscene talk from your mouth."

Proverbs 22:24 "Make no friendship with a man given to anger, nor go with a wrathful man."

Galatians 5:19-21 "Now the works of the flesh are evident: sexual immorality, impurity, sensuality, idolatry, sorcery, enmity, strife, jealousy, fits of anger, rivalries, dissensions, divisions, envy, drunkenness, orgies, and things like these. I warn you, as I warned you before, that those who do such things will not inherit the kingdom of God."