Devil
Judaism
In Judaism there is no concept of a devil like in mainstream Christianity or Islam. In Hebrew, the biblical word ha-satan (השָׂטָן) means "the adversary"[2] or the obstacle, or even "the prosecutor" (recognizing that God is viewed as the ultimate Judge).
In the book of Job (Iyov), ha-satan is the title, not the proper name, of an angel submitted to God; he is the divine court's chief prosecutor. In Judaism ha-satan does not make evil, rather points out to God the evil inclinations and actions of humankind. In essence ha-satan has no power unless humans do evil things. After God points out Job's piety, ha-satan asks for permission to test the faith of Job. The righteous man is afflicted with loss of family, property, and later, health, but he still stays faithful to God. At the conclusion of this book God appears as a whirlwind, explaining to all that divine justice is inscrutable. In the epilogue Job's possessions are restored and he has a second family to "replace" the one that died.
In the Torah, ha-satan is mentioned several times. The main time is during the incident of the golden calf. As the source of people's evil inclination, or yetser harah, he is responsible for the Israelites building the golden calf while Moses was on Mount Sinai receiving the Torah from God. In the book of 1 Chronicles 21:1, ha-satan incites David to an unlawful census.
In fact, the Book of Isaiah, Job, Ecclesiastes, and Deuteronomy all have passages in which God is credited for exercising sovereign control over both good and evil.