There is no evidence that ANY of the twelve apostles EVER separated from Jewish law and Torah observance…NONE! Yet we do have many verses of their continued Torah observance well after Yeshua's ascension.
I understand that they were still following the Law of Moses, but you have to understand that we are talking about the Jews and the Gentiles. Gentiles do not have to follow the Law of Moses as per their agreement in Acts 15.
Gal 2:7 On the contrary, they saw that I/Paul had been entrusted with the task of preaching the gospel to the Gentiles, just as Peter had been to the Jews.
How many gospels do we see here? 1 Gospel, and that is, the gospel of the Lord Jesus Christ.
Paul and Peter were preaching the same Gospel to the Gentiles and to the Jews ITO. Now, what is the difference between the Jews and the Gentiles as far as the Gospel is concern? None! The same Gospel.
Gal 2:8 For God, who was at work in the ministry of Peter as an apostle to the Jews, was also at work in my ministry as an apostle to the Gentiles.
The same or only 1 gospel came from God. The gospel of the Lord Jesus was preached to the Gentiles by Paul and this same Gospel by Peter to the Jews.
The only difference between the Jews and the Gentiles is the one they agreed upon in Acts 15, and that is, NO Law of Moses for the Gentiles to follow, but for the Jews they could still continue the Law of Moses.
IOW, a Jew cannot stop being a Jew or stop the Law of Moses as per their tradition. The only thing that Paul wants to get across to the Jews was that
no one can be justified by the Law of Moses, but as far as the tradition according to the Law of Moses, like circumcision, a Jew cannot stop being a Jew. Therefore, a Jew cannot force the Gentiles to follow the Law of Moses like what the “false brother –Gal 2:4” did in Acts 15:1-2.
Ac 13:39 Through him everyone who believes is justified from everything you could
not be justified from by the law of Moses.
This is what Paul meant
by justification by faith and
not by the Law of Moses.
There is nothing wrong with the Law of Moses if you are a Jew as far as tradition is concern of course, but as far as being justified by it, no one can be justified, only by faith.