Belial is a term occurring in the Hebrew Bible/Old Testament which later became personified as the devil in Christian texts of the New Testament. Alternate spellings include Baalial, Balial, Belhor, Beliall, Beliar, Berial, Bylyl and Beliya'al. In the Secret Book of John, an early Gnostic text, the ruler of the underworld is referred to as Belias. From Wikipedia
