——>Meaning that Scripture records Jews keeping the 7th day Sabbath
Any “Jews” observed keeping the sabbath after Christ’s death, that believed in Jesus Christ as their Savior, weren’t “Jews”. They were “in Christ Jesus”. Same goes for “Gentiles/Greeks”.
Galatians 3:26For ye are all the children of God by faith in Christ Jesus. 27For as many of you as have been baptized into Christ have put on Christ. 28There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female: for ye are all one in Christ Jesus. 29And if ye be Christ’s, then are ye Abraham’s seed, and heirs according to the promise.
As you should know, those Jewish believers without a resurrected Christ did not realize the New Cov. until after the Lords resurrection. Try again.
And a great many people were added to the Lord. So Barnabas went to Tarsus to look for Saul, and when he had found him, he brought him to Antioch. For a whole year they met with the church and taught a great many people. And in Antioch the disciples were first called Christians.
Acts 11:24-26
Originally, the label was a term of derision. I think before they were called "Christians" they were called "Jews", "brothers", and "sisters" who believed, were indwelt by the Holy Spirit, and "saved".
Indeed, Some early believers (Peter et al) sought to compel Gentiles believers to follow some of the Mosaic Law and Jewish traditions. Even Paul conceded on certain matters at the insistence of these "judaizers."
Here is what Paul (by inspiration) wrote:
But when I saw that their conduct was not in step with the truth of the gospel, I said to Cephas before them all, “If you, though a Jew, live like a Gentile and not like a Jew, how can you force the Gentiles to live like Jews?”
Galatians 2:14
Clearly, Daniel is correct on this matter.