Since you have purified your souls by obedience to the truth so that there is a sincere love for other believers (philadelphian | φιλαδελφίαν | acc sg fem), love one another fervently from a pure heart,
Now with regard to brotherly love (philadelphias | φιλαδελφίας | gen sg fem) you have no need for us to write to you, for you yourselves have been taught by God how to love one another.
“To the angel of the church in Philadelphia (Philadelpheia | Φιλαδελφείᾳ | dat sg fem) write: The one who is holy, who is true, who has the key of David, who opens and no one can shut, who shuts and no one can open, has this to say:
saying, “Write what you see on a scroll and send it to the seven churches — to Ephesus, Smyrna, Pergamum, Thyatira, Sardis, Philadelphia (Philadelpheian | Φιλαδέλφειαν | acc sg fem), and Laodicea.”
Then came one of the seven angels who had the seven bowls (phialas | φιάλας | acc pl fem) full of the seven final plagues, and he spoke with me, saying, “Come, I will show you the Bride, the wife of the Lamb.”