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.