Of the seven churches addressed by John, the fourth church, Thyatira, is the smallest yet it received the longest message. (Rev 2:18-29) This corrupt church was located 42 miles inland from the Aegean Sea in an alluvial plain between the Hermus and Calcius rivers . There were no natural geographical formations like steep mountains or deep rivers to provide it with a good base from which to defend its position. Its sole purpose was to act as the first line of defense in front of a hostile advancing army and to hinder their movement while the kingdom's main forces...