Revelation 3:9 in the King James Version
Behold, I will make them of the synagogue of Satan, which say they are Jews, and are not, but do lie; behold, I will make them to come and worship before thy feet, and to know that I have loved thee.
Context
8 “I know your works (behold, I have set before you an open door, which no one can shut), that you have a little power, and kept my word, and didn’t deny my name.
9 Behold, I make some of the synagogue of Satan, of those who say they are Jews, and they are not, but lie—behold, I will make them to come and worship before your feet, and to know that I have loved you.
10 Because you kept my command to endure, I also will keep you from the hour of testing which is to come on the whole world, to test those who dwell on the earth.