The sixth church addressed in the book of Revelation was in Philadelphia. This is the only place where this city is mentioned in the Bible. It was likely a smaller church, yet the Lord told them about their great opportunity to spread the gospel.
“And to the angel of the church in Philadelphia write: He who is holy, who is true, who has the key of David, who opens and no one will shut, and who shuts and no one opens, says this: ‘I know your deeds. Behold, I have put before you an open door which no one can shut, because you have a little power, and have kept My word, and have not denied My name. Behold, I will cause those of the synagogue of Satan, who say that they are Jews and are not, but lie—I will make them come and bow down at your feet, and make them know that I have loved you. Because you have kept the word of My perseverance, I also will keep you from the hour of testing, that hour which is about to come upon the whole world, to test those who dwell on the earth. I am coming quickly; hold fast what you have, so that no one will take your crown. He who overcomes, I will make him a pillar in the temple of My God, and he will not go out from it anymore; and I will write on him the name of My God, and the name of the city of My God, the new Jerusalem, which comes down out of heaven from My God, and My new name. He who has an ear, let him hear what the Spirit says to the churches’” (Revelation 3:7-13).
