Ephesians 4:26
Being angry isn't the sin. Letting it run you is the danger.
“Be angry, and don’t sin.” Don’t let the sun go down on your wrath,
Anger is real, and the Bible doesn't pretend otherwise. These are about what to do with it.
“Be angry, and don’t sin.” Don’t let the sun go down on your wrath,
When he had looked around at them with anger, being grieved at the hardening of their hearts, he said to the man, “Stretch out your hand.” He stretched it out, and his hand was restored as healthy as the other.
So, then, my beloved brothers, let every man be swift to hear, slow to speak, and slow to anger;
A gentle answer turns away wrath, but a harsh word stirs up anger.