The letters to the seven churches in Revelation, though penned by the Apostle John, are direct messages from Jesus Christ Himself. John, exiled on the island of Patmos, received a profound vision where Christ dictated these letters, addressing the unique conditions, commendations, and admonitions of each church.
For it is by grace you have been saved, through faith—and this is not from yourselves, it is the gift of God.
Ephesians 2:8 (NIV)