son of the morning
Isaiah 14:12-14 evidently refer to Satan, who, as prince of this world-system (see "World," John 7:7 (See Scofield "Revelation 13:8") is the real unseen ruler of the successive world- powers. Tyre, Babylon, Medo-Persia, Greece, Rome, etc. (see Ezekiel 28:12-14 Lucifer, "day-star," can be none other that Satan. This tremendous passage marks the beginning of sin in the universe. When Lucifer said, "I will," sin began. See Scofield "Revelation 20:10".
See other instances of addressing Satan through another, Genesis 3:15; Matthew 16:22; Matthew 16:23.