'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 that are before his throne;

saying, What thou seest, write in a book and send it to the seven churches: unto Ephesus, and unto Smyrna, and unto Pergamum, and unto Thyatira, and unto Sardis, and unto Philadelphia, and unto Laodicea.

the mystery of the seven stars which thou sawest in my right hand, and the seven golden candlesticks. The seven stars are the angels of the seven churches: and the seven candlesticks are seven churches.