Murder Begins in the Heart
“You have heard that it was said to those of old, ‘You shall not murder, and whoever murders will be in danger of the judgment.’ But I say to you that whoever is angry with his brother without a cause shall be in danger of the judgment. And whoever says to his brother, ‘Raca!’ shall be in danger of the council. But whoever says, ‘You fool!’ shall be in danger of hell fire.” Mathew 5:21-22
When you see several people in your family exhibiting personality characteristics of anger or rage. This could be a generational curse and you need to repent for the sins of the forefathers. A strongman of Jealousy can come upon someone that cannot control their anger (Genesis 4:5-8)
Anger and rage also have shown to be the causal factors for Heart Attacks and strokes. You can bind a spirit of Anger, rage, jealousy and any bitterness in Jesus name and loose peace, love and a sound mind.
Of course, there is righteous anger. Jesus exhibited this when He overturned the money changers in the Temple. Righteous anger is not a sin.