en_tn_condensed/rev/03/09.md

synagogue of Satan

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

those calling themselves Jews but are not, but rather liars

"those calling themselves Jews when they are not Jews: instead, they are liars." These words further describe "those who belong to the synagogue of Satan."

bow down

"bow down in submission"

before your feet

"before you" or "to you"

they will know

"they will learn" or "they will admit"