Later Christian tradition came to use the Latin word for "morning star", lucifer, as a proper name ("Lucifer") for the devil; as he was before his fall [REF].
However, according to both Christian[REF] and Jewish exegesis, in the Book of Isaiah, chapter 14, the King of Babylon, Nebuchadnezzar II, conqueror of Jerusalem, is condemned in a prophetic vision by the prophet Isaiah and is called the "Morning Star" (planet Venus) [REF].