But we see Herord was planning to kill Jesus. Because of selfishness the envious Cain could not endure Abel, nor Saul with David. Joseph's brothers tried to kill Joseph because of envy. Envy will develop into hatred then anger into murder. Anger Anger boils in the veins, and often produces murder.
All rash anger is murder committed in the heart.
If you are stumbled with a brother or a sister, do not waste time, leave your gift at the altar and go directly to that person and speak to that person. Everything should be done in love and humility instead of pride. Anger is an instant madness. In 1988, an estimated 156 wives and 275 husbands were convicted of killing their spouses. The cause is anger.