This summer my local congregation, Lutheran Church of the Master, is engaged with a series of sermons from Revelation 2-3. I am filling in for our pastor for many Saturday evening vespers services. So far I have preached on the first three churches of the Revelation. Here is the first, The Letter of Jesus to the Church in Ephesus.
Note: These seven letters were all given by Jesus to John to deliver to the angel/messenger/bishop of each church.