Yes, such groups definitely existed, but there's no clear textual evidence that John’s “synagogue of Satan” imagery in Revelation was influenced by or related directly to them—it seem more likely that the author was refering to local Jewish opposition to early Christians (Matthew 10:17, 23:34; Luke 21:12; John 16:2; Acts 9:1–2, 22:19, 26:11; Galatains 4:29).
Matthew 23:34 — Therefore, behold, I (Jesus) am sending you prophets and wise men and scribes; some of them you will kill and crucify, and some of them you will scourge in your synagogues, and persecute from city to city, (NASB)
John 8:39, 44-45 — They (the Jews, v. 31) answered him (Jesus), “Abraham is our father. ” Jesus said to them, “If you were Abraham’s children, you would be doing the works Abraham did, You are of your father the devil, and your will is to do your father’s desires. He was a murderer from the beginning, and does not stand in the truth, because there is no truth in him. When he lies, he speaks out of his own character, for he is a liar and the father of lies. But because I tell the truth, you do not believe me. (ESV)
Revelation 2:9, 3:9 — I know your tribulation and your poverty (but you are rich ), and the blasphemy by those who say they are Jews and are not, but are a synagogue of Satan. Behold, I will cause those of the synagogue of Satan, who say that they are Jews and are not, but lie -I I will make them come and bow down at your feet, and make them know that I have loved you. (NASB)
While my view—rootedMy view—grounded in the broader Johannine context, Pauline statements and Jesus'teachings, Jesus’ warnings about synagogue prophecies—understandspersecution, and the wider Johannine context—is that this as referringrefers to specific Jewish groups opposing early Christians in Smyrna and Philadelphia. However, alternative interpretations also exist, with some seeing the imagery as more symbolic or universally representative ofbroadly representing opposition to the gospel (which, which is a plausible) reading.
It’s important to recognize that these passages (e.g., synagogue of SatanSatan; Matthew 27:25) address specific historical contexts and should not be taken as a blanket condemnation of all Jews. Sadly, some have misused texts like these to justify antisemitism—something the New Testament does not support (Romans 11:1; 1 John 4:20).