What is the origins of Evil/Devil in Christianity and Judaism
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According to the Bible, the origins of evil is the devil. The origins of the devil is God. God created the devil as an archangel. The devil became proud and greedy and rebelled against God. God casted him out along with 1/3 of all the angels in heaven, who had sided with the devil.
The origins of evil in this world and in our lives, according to the Bible, again is the devil. He tempted, and continues to temp humanity to disobey God.
Evil is an absence of good. According to the Bible, obeying God is good, while disobeying God is evil.