'Seven Churches' in the Bible

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

saying: What thou seest, write in a book, and send it to the seven churches; to Ephesus, and to Smyrna, and to Pergamus, and to Thyatira, and to Sardes, and to Philadelphia, and to 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 the seven churches.