Revelation 3 is the third chapter of the Book of Revelation or the Apocalypse of John in the New Testament of the Christian Bible. The book is traditionally attributed to John the Apostle, but the precise identity of the author remains a point of academic debate. This chapter contains messages to the churches of Sardis and Philadelphia and Laodicea, three of the seven churches of Asia located in modern-day Turkey, continuing from the messages for the other four churches which appear in chapter 2.