Revelation 3:7-9

7To 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.1

8I know your deeds. Behold, I have placed before you an open door, which no one can shut. I know that you have only a little strength, yet you have kept My word and have not denied My name. 9As for those who belong to the synagogue of Satan, who claim to be Jews but are liars instead, I will make them come and bow down at your feet, and they will know that I love you.