Revelation 2:9; Revelation 3:9

9 'I know your tribulation and your poverty (but you are rich ), and the blasphemy by those who say they are Jews and are not, but are a synagogue of Satan.
9 '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.