What is the meaning of Revelation 2:9?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

I know your affliction and your poverty—though you are rich! And I am aware of the slander of those who falsely claim to be Jews, but are in fact a synagogue of Satan.

Berean Standard Bible (BSB)

“I know your works, oppression, and your poverty (but you are rich), and the blasphemy of those who say they are Jews, and they are not, but are a synagogue of Satan.

World English Bible (WEB)

I know{G1492}{(G5758)} thy{G4675} works{G2041}, and{G2532} tribulation{G2347}, and{G2532} poverty{G4432},(but{G1161} thou art{G1488}{(G5748)} rich{G4145}) and{G2532} I know the blasphemy{G988} of them which{G3588} say{G3004}{(G5723)} they{G1438} are{G1511}{(G5750)} Jews{G2453}, and{G2532} are{G1526}{(G5748)} not{G3756}, but{G235} are the synagogue{G4864} of Satan{G4567}.

Strong's King James

(9) I know your affliction, your poverty, yet you are rich and the blasphemy from those saying they are Y'hudim and aren't rather a synagogue of the adversary.

The F.O.G*

[9] I know about your suffering and your poverty - though in spiritual reality you are rich! I know about the slander coming from those who claim to be Jews but aren't - they are really a gathering of Satan's followers.

The F.O.G Paraphrase

I have known thy works, and tribulation, and poverty—yet thou art rich—and the evil-speaking of those saying themselves to be Jews, and are not, but are a synagogue of the Adversary.

Young's Literal Translation