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Greek: diabolos; Meaning: a slanderer
In Leviticus 17:7 the word “devil” is the translation of the Hebrew sair, meaning a “goat” or “satyr” (Isaiah 13:21; 34:14), alluding to the wood-demons, the objects of idolatrous worship among the heathen.
In the narratives of the Gospels regarding the “casting out of devils” a different Greek word (daimon) is used. In the time of our Lord there were frequent cases of demoniacal possession (Matthew 12:25-30; Mark 5:1-20; Luke 4:35; 10:18, etc.).