The meaning of Beelzebub in the Bible
(From Easton's Bible Dictionary)

(Gr. form Beel'zebul), the name given to Satan, and found only in the New Testament (Matthew 10:25; 12:24,27; Mark 3:22). It is probably the same as Baalzebub (q.v.), the god of Ekron, meaning "the lord of flies," or, as others think, "the lord of dung," or "the dung-god."

See more on the meaning of Beelzebub in the Bible:
Beelzebub {International Standard Bible Encyclopedia}
Beelzebub {Hitchcock's Bible Name}

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