Proverbs 15:1
“A gentle answer turns away wrath, but a harsh word stirs up anger.”
Hostility seems to be a hallmark of this church age in a similar way that road-rage is to the world. It is alright for us to be righteously indignant as long as we do not sin. There is a place for righteous indignation, but God does not permit much anger because it is difficult not to sin when angry. That kind of anger is a “mark of the beast.”
Frequently, hostility is simply a denial of reality. People do not have tempers born in them; angry tempers begin to be created in childhood. Parents allow tempers to burst forth, and each time it happens, it becomes easier—and the next time and the next and on and on until it is ingrained in the personality.
Anger is nothing more than a passionate response to some sort of stimuli, and it is almost always a self-centered response. It usually begins when we believe that what should or should not have happened either did or did not, and conflict arises. We can believe, either strongly or weakly, it should or should not have happened. Therefore, anger can be either strong or weak or anywhere in between.
The problem with anger arises when we turn our feelings and drives to set things right, as we see them, into absolute necessities. We feel it must be our way, but the reality is that others have the same rights from God that we have. Everyone has free moral agency. Anger arises because of the way we judge things: We apply the standard that we hold as being the right one.