But I tell you that anyone who is angry with his brother will be subject to judgement.
- Matthew 5:22 - NIV

Do not take revenge, my friends, but leave room for God's wrath, for it is written:
"It is mine to avenge; I will repay," says the lord.
On the contrary:
"If your enemy is hungry, feed him; if he is thirsty, give him something to drink.
In doing this, you will heap burning coals on his head."
Do not be overcome by evil, but overcome evil with good.
- Romans 12:19-21 - NIV

"In your anger do not sin" : Do not let the sun go down while you are still angry,
- Ephesians 4:26 - NIV

But now you must rid yourselves of all such things as these: anger, rage, malice, slander,
and filthy language from your lips.
- Colossians 3:8 - NIV

My dear brothers, take note of this: Everyone should be quick to listen, slow to speak
and slow to become angry, for man's anger does not bring about the righteous
life that God desires.
- James 1:19-20 - NIV

Refrain from anger and turn from wrath; do not fret - it leads only to evil.
- Psalm 37:8 - NIV