Φιλαδέλφεια

Revelation 1:11 Φιλαδέλφειαν Philadelphia

saying, “Write on a scroll what you see and send it to the seven churches: to Ephesus, Smyrna, Pergamum, Thyatira, Sardis, Philadelphia, and Laodicea.”

Here: Named after King Attalus II “Philadelphus” (“brother-lover”) and often shaken by earthquakes. It is a city name, not a description of the church’s love.

Revelation 3:7 Φιλαδελφείᾳ Philadelphia

To the angel of the church in Philadelphia write: These are the words of the One who is holy and true, who holds the key of David. What He opens no one can shut, and what He shuts no one can open.

Here: A city in Lydia (modern Alaşehir, Turkey), named after the Pergamene king Attalus II 'Philadelphus' ('lover of his brother'). The name honoured a dynasty. It was not a description of the church.