Main article: Christian teaching about the Devil See also: War in Heaven In Christianity, terms that are synonymous with 'Satan' include: The most common English synonym for 'Satan' is 'Devil', which descends from Middle English devel, from Old English dēofol, that in turn represents an early Germanic borrowing of Latin diabolus (also the source of 'diabolical'). This in turn was borrowed from Greek diabolos "slanderer," from diaballein "to slander": dia- "across, through" + ballein "to hurl." In the New Testament, 'Satan' occurs more than thirty times in passages alongside Diabolos (Greek for "the devil"), referring to the same person or thing as Satan. Lucifer is sometimes used in Christian theology to refer to Satan, as a result of identifying the fallen "son of the dawn" of Isaiah 14:12 with the "accuser" of other passages in the Old Testament. Beelzebub is originally the name of a Philistine god (more specifically a certain type of Baal, from Ba'al Zebûb, lit. "Lord of Flies") but is also used in the New Testament as a synonym for Satan. A corrupted version, "Belzeboub," appears in The Divine Comedy. Satan is identified as the serpent who convinced Eve to eat the forbidden fruit; thus, Satan has often been depicted as a serpent. This interpretation goes back at least as far as the time of the writing of the book of Revelation, which specifically identifies Satan as being the serpent (Rev. 20:2). "The dragon" and "the old serpent" in the Book of Revelation 12:9, 20:2 have also been identified with Satan, as have "the prince of this world" in the Book of John 12:31, 14:30; "the prince of the power of the air" also called Meririm, and "the spirit that now worketh in the children of disobedience" in the Book of Ephesians 2:2; and "the god of this world" in 2 Corinthians 4:4. Leviathan is described as "that crooked serpent," which is also used to describe Satan in Revelation 12:9. 'Sar ha Olam,' a possible name for Metatron, is described as Satan by Michael, Jehoel and St. Paul.