Revelation 3:7

7 “And to the angel (divine messenger) of the church in 3:7 Philadelphia (modern Alashehir, Turkey) was a commercial center located on elevated ground overlooking the fertile plain of the Hermus (Gediz) River. In 189 b.c. the king of Pergamum established Philadelphia and named the city to honor his brother.Philadelphia write:

These are the words of the Holy One, the True One, He who has the key [to the house] of David, He who opens and no one will [be able to] shut, and He who shuts and no one opens: [Is 22:22]