In the Book of Revelation, the angel sent to John the Evangelist tells him (Revelation 1:11, KJV):
- What thou seest, write in a book, and send it unto the seven churches which are in Asia; unto Ephesus, and unto Smyrna, and unto Pergamos, and unto Thyatira, and unto Sardis, and unto Philadelphia, and unto Laodicea.
This is a stub article -- there is lots more to say here, from both a Bible scholarship and historical angle.