In practice, many promoters of the HRM draw their content more from Talmudic Judaism than from Old or New Testament Judaism...
...If Telchin’s statistics are even close, it means that up to 95 percent of the attendees at Messianic synagogues are Gentiles and only 5 percent are Jews. This tells us that Gentiles are being “converted” to forms of Judaism that even many Jews reject. That turns Acts 15 on its head. The really big question that Hebrew Roots teachers must answer is, “Why are there far more Gentile believers than Jews in Messianic synagogues and Messianic fellowships?”
One very important and urgent issue that the Hebrew Roots Movement never addresses is—which Judaism? This is the elephant in the room.
It would be more correct to speak of Judaisms. There were different streams of Judaism in the first century. Is it to be the religious Pharisees? And, if so, is it the school of Shammai or Hillel? Or is it the religion of the Sadducees? Why not the Judaism of the Zealots or the Herodians? Is it to be the Judaism of John the Baptist? Better yet, the purists—the separatists called the Essenes. As has been mentioned, any first-century Judaism of any stripe cannot be fully practiced since there is no temple, no priesthood, and no animal sacrifices. Some in the Hebrew Roots Movement seem to be enamored with modern Orthodox Jews. But the large and unanswered question is: which Orthodox group?
In the complex world of Jewish Orthodoxy, there are a myriad of competing groups with different dress and different traditions, all claiming to have their corner on the truth.
What we are dealing with is both foundational and fundamental. Is it to be synagogue or church? The Jews had a practice that if anyone professed Christ they were to be thrown out of the synagogue (John 9:22). Yet those in the HRM would try to pretend that synagogues are good places to be—or at least to emulate or push their way back in. Can we merge church and synagogue? Should we? We need to remember that Jesus said clearly, “On this rock I will build my church.” He did not say, “I will build my synagogue."