Revelation is a book for the whole church, but there were specific churches receiving it in John’s time. Here with the messages to Ephesus, Smyrna, and Pergamum, we can see that the message of Revelation isn’t intended to fly right over the heads of the early believers. It was meant to both challenge and encourage them, something they certainly needed. They lordship of Christ was always their foundation, but they all had to remain diligent to being the body of Christ in the here and now.