". . . But let everyone be quick to hear, slow to speak and slow to anger; for the anger of man does not achieve the righteousness of God."
God realizes that anger can build up within us. That's not wrong within itself. However, the Scriptures tell us that we are to be "slow to anger." When you are able to maintain control of your anger, you demonstrate great inner strength. The one who "flies off the handle" at the least provocation has little inner strength and is at the mercy of others.
Some Gems From the Book of Proverbs
He who is slow to anger is better than the mighty,
And he who rules his spirit, than he who captures a city.