'Seven Churches' in the Bible

John to the seven churches which are in Asia: Grace be with you, and peace from him, who is, and who was, and who is coming; and from the seven spirits which are before the throne of God,

the mystery of the seven stars which thou seest in my right hand, and the seven golden lamps. The seven stars are the angels of the seven churches, and the seven lamps which thou seest are the seven churches.