Be Angry, AND yet Do not sin; do not let the sun go down on your anger, and do not give the devil an opportunity.
We are human beings. We do get angry but the Bible says it is ok to be angry just don't sin. How do we open an opportunity for the devil?
Well, we begin to seek revenge, we gossip, we stop loving our neighbors, we show no mercy or grace, and we forget we must be Christ-like and minded.
Do not allow anger to control you to becoming unGodly. Yes, we do hurt and people expect Christians to be without angry and we get upset about things. We do not have to be of this world but with Christ we can become above our emotions and rise above our anger.