en_tn_condensed/rev/02/09.md

I know your sufferings and your poverty

"I know how you have suffered and how poor you are"

I know the slander of those who say they are Jews

"I know how people have slandered you—those who say they are Jews" or "I know how people have said terrible things about you—those who say they are Jews"

but they are not

"but they are not real Jews"

a synagogue of Satan

People who gather to obey or honor Satan are spoken of as if they were a synagogue, a place of worship and teaching for the Jews.