'Seven Churches' in the Bible

John, to the seven churches that are in Asia: Grace to you and peace, from him who is and who was and who is to come; and from the seven Spirits who are before his throne;

saying, "What you see, write on a scroll and send to the seven churches: to Ephesus, Smyrna, Pergamum, Thyatira, Sardis, Philadelphia, and to Laodicea."

the mystery of the seven stars which you saw in my right hand, and the seven golden lampstands. The seven stars are the angels of the seven churches. The seven lampstands are seven churches.