King James Version (KJV) - Revelation 2:9 >

I know thy works, and tribulation, and poverty, (but thou art rich) and [I know] the blasphemy of them which say they are Jews, and are not, but [are] the synagogue of Satan.

Berean Study Bible (BSB) - Revelation 2:9 >

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.

Textus Receptus (TR) - Revelation 2:9 >

Οἶδά σου τὰ ἔργα καὶ τὴν θλίψιν καὶ τὴν πτωχείαν, πλούσιος δὲ εἶ· καὶ τὴν βλασφημίαν τῶν λεγόντων Ἰουδαίους εἶναι ἑαυτούς, καὶ οὐκ εἰσίν, ἀλλὰ συναγωγὴ τοῦ Σατανᾶ.