Rev 2:13 Satan's Seat - His political dominion
Rev 2:24 Satan's Depth - His philosophical deception
Rev 3:9 Satan's Synagogue - His priestly design

Satan's Seat - Roaring Lion (1Pet 5:8)
Satan's Depth - Subtle Serpent (2Cor 11:3)
Satan's Synagogue - Angel of Light (2Cor 11:14)