Ephesus : Revelation 1:11, 2:1-7, Acts 18:19-28, 19:1-41, Ephesians
Laodicea : Revelation 3:14-22, Colossions 2:1, 4:13-16
Pergamum : Revelation 2:12-17
Philadelphia : Revelation 3:7-13
Sardis : Revelation 3:1-6
Smyrna : Revelation 2:8-11
Thyatira : Revelation 2:18-29, Acts 16:14
These seven important churches of Christianity are all situated in the western part of Anatolia. Three out of these seven places are still occupied by people : Philadelphia (Alasehir), Smyrna (Izmir), Thyatira (Akhisar). All the others are also very close to current settlement points of Turkey.
Ephesus is the most renovated and impressive of them. The book of Revelation, written by John, was intended to be heard by all Christians not only by these addressed seven churches of Anatolia. He wanted to prevent the disintegration of Christianity by clarifying and making clear the alternatives facing the followers of Jesus : the choices of worshipping Roman gods or the almighty god of Christianity.
He wrote revelation in the apocalyptic form to persuade the intended community clearly.