Anger turned inward is very harmful. But we are not allowed by God to take out our anger on someone else. He tells us to be angry but dont let the anger fester. So there is value in anger. Anger is the motive that moves people to change a problem in the culture. For every opinion there are disagreements. For every decision in life there is choice between good or bad. Anger is the emotion that motivates people to do the good. So a person who has deep convictions has a healthy amount of anger that he can control. I believe that all pain whether physical or spiritual is the fuel that produces anger. The only way that we could avoid anger is to never be opposed by pain. It would be fantasy to live in a world that was totally innocent.

So anger is the tension between pain and rest that we deal with. God displays His anger toward sinners by pronouncing death on all violators of His law. God does not live in tension because nothing can oppose Him. He simply punishes all corruption. He doesnt wait for someone to violate His law. He knows before they sin that they are gonna sin. God has taken care of anger in two ways. He marks all the sin of the wicked. They store it up for the day of judgement. ... but He overlooks the sins of the righteous because of Christ, In both instances He has carried out His law to its fullest. So you can say that God is not emotional because at all times He is absolutely just. His line between blessing those in Christ and cursing those who are not is always perfect. This is His righteous indignation. In the bible He pronounces judgement and blessing as close to the standard that He judges at all times. When we pronounce the death sentence in His law our personal anger gets consumed in His righteous indignation. We need the freedom that God has because He does whatever pleases Him. When we experience the absolute pronouncements of His law then we freed from fufilling our personal anger and we cheer Him on in creating the world where our blessing is paid to us from the success of the men who used anger to destroy others.