Revelation 2:9:
I know your afflictions and your poverty-yet you are rich! I know about the slander of those who say they are Jews and are not, but are a synagogue of Satan.
Notes on Revelation 2:9:
who say they are Jews. Although they were Jews physically, they were not true Jews but spiritual pagans (cf. Rom. 2:28), who allied with other pagans in putting Christians to death as they attempted to stamp out the Christian faith. synagogue of Satan. With the rejection of its Messiah, Judaism became as much a tool of Satan as emperor worship.