Revelation 2:9-10

2:9 ‘I know the distress you are suffering and your poverty (but you are rich). I also know the slander against you by those who call themselves Jews and really are not, but are a synagogue of Satan. 2:10 Do not be afraid of the things you are about to suffer. The devil is about to have some of you thrown into prison so you may be tested, and you will experience suffering for ten days. Remain faithful even to the point of death, and I will give you the crown that is life itself.

Revelation 2:24

2:24 But to the rest of you in Thyatira, all who do not hold to this teaching (who have not learned the so-called “deep secrets of Satan”), to you I say: I do not put any additional burden on you.

Revelation 3:9

3:9 Listen! I am going to make those people from the synagogue of Satan – who say they are Jews yet are not, but are lying – Look, I will make them come and bow down at your feet and acknowledge that I have loved you.