In Revelation 2-3 Jesus gives seven specific messages to seven churches. In each of these messages He identifies specific challenges the church in each generation faces, encourages us to overcome these challenges, and offers us profound rewards for overcoming these challenges. Each of these messages is timeless and intended to prepare us to overcome and receive significant rewards from Jesus.
One of the more profound predictions the book of Revelation makes is that the blood of Jesus has restored humanity so that human beings can serve as priests on the earth. The subject of believers as priests tends to be one of the most neglected subjects in the church in comparison to how central it is in Scripture.