A significant portion of Jewish converts to Christianity continued to keep Jewish traditions. This is because Christianity was originally a sect of Judaism. This is widely discussed in Church history. We have a sticky thread on it in the Messianic forum.
Clement of Alexandria- All the churches were Greek religious colonies. Their language was Greek, their organization Greek, their writers Greek and their ritual Greek. Thus the church at Rome was but one of a confederation of Greek religious republics rounded by Christianity”. He, a church father, said this between 150-200 AD.
In his own words, the church was thoroughly pagan Greek and in no way Jewish. It was also not unified in teachings or in theologies. It was a “confederation rounded by Christianity.” In other words, all they really had in common was that in some degree they accepted Jesus as the Christ, and they removed as much as possible the stigma of Judaism from their worship and theology making it pagan Greek.
Almost all the popular church history was handed down to us by he church, written by the church fathers. They are proven liars again and again, yet being immersed in their teachings and having little else for centuries we tended to believe them. Now we have discussions like this which call out the truth. Again, look to the First Council of Nicea and you'll see there was no "church." There were "churches," but no common doctrinal beliefs. There were men and assemblies which had influence on how the church would develope doctrinally, but again look up all the subsequent "councils" and you'll see it took literally centuries before the catholic (universal) church really became universal (Catholic). Then there was the Great East-West Schism! You have also only to look at the writings of the church fathers themselves to see that the sect of the Nazarenes and the Christian Church were at odds from the beginning (mid 4th cen when the church just began to form). Some churches did follow some Judaic practices, but most did not and many were antagonistic. The church fathers, and so the church itself hated the Jews, and hated the Nazarenes even more! They said as much, time and again.
Your sticky thread probably needs to get unstuck if that is its' conclusion. At any rate, I'm not going to go and rehash an old thread, probably arguing with half the members. Anyone can look this stuff up for themselves and come to their own conclusions. I've given you the starting points. If you want the truth, research and find out. If not ...
Bonacursus was a 12th-century Italian Cathar who converted to Catholicism.
Bonacursus, entitled “Against the Heretics”: “Let those who are not yet acquainted with them, please note how perverse their belief and doctrine are. First, they teach that we should obey the Law of Moses according to the letter - the Sabbath, and circumcision, and the legal precepts still being in force. Furthermore, to increase their error, they condemn and reject all the Church Fathers, and the whole Roman Church."
- just, feel the lo-o-o-ove ... !