Evil is moral rebellion against God. It is contrary to the will of God. There is natural evil (floods, storms, famines, etc.,) and moral evil (adultery, murder, idolatry, etc.). Natural evil is a result of moral evil. Adam's sin resulted in sin entering the world allowing floods, storms, famines, etc. Evil originated with Satan (Isaiah 14:12-15) and is carried on by man (Matt. 15:18-19). (See Theodicy).