Revelation 3:7-13 - The Letter To The Church In Philadelphia
7 "To the messenger of the church in Philadelphia, write: "The one who is holy, who is true, who has the key of David, who opens a door that no one can shut, and who shuts a door that no one can open, "says this: 8 "I know what you've been doing. Look! I have put in front of you an open door that no one can shut. You have only a little strength, but you have obeyed my word and have not denied my name. 9 I will make those who belong to the synagogue of Satan those who claim to be Jews and aren't, but are lying come and bow down at your feet. Then they will realize that I have loved you. 10 Because you have obeyed my command to endure, I will keep you from the hour of testing that is coming to the whole world to test those living on the earth. 11 I am coming soon! Hold on to what you have so that no one takes your victor's crown. 12 I will make the one who conquers to become a pillar in the sanctuary of my God, and he will never go out of it again. I will write on him the name of my God, the name of the city of my God (the new Jerusalem coming down out of heaven from God), and my own new name.
13 "Let everyone listen to what the Spirit says to the churches.'"