Devil comes from the Greek word diabolos, which means accuser. The greatest of all the fallen angels, he opposes God and is completely evil, however, he is not equal to God as might be understood from a dualistic perspective. He is often called Lucifer which is a Latin translation of "light bearer" found in Isaiah 14:12 and also the accuser of the brethren in (Rev. 12:10), dragon (Rev. 12:9), the devil (Matt. 4:1), the tempter (Matt. 4:3), the accuser (Rev. 12:10), the prince of demons (Luke 11:15), the ruler of this world (John 12:31). See Isaiah 14:12-15 for a description of the fall of the devil. Upon Jesus' return, the Devil will be vanquished--depending on the eschatological position. His future is the eternal lake of fire.