Revelation 1:11 saying, “Write on a scroll what you see and send it to the seven churches: to Ephesus, Smyrna, Pergamum, Thyatira, Sardis, Philadelphia, and Laodicea.”
Revelation 3:1“To the angel of the church in Sardis write: These are the words of the One who holds the seven spirits of God and the seven stars. I know your deeds; you have a reputation for being alive, yet you are dead.
Revelation 3:4But you do have a few people in Sardis who have not soiled their garments, and because they are worthy, they will walk with Me in white.