Commentaries:
By this point, the apostle Paul was basically only teaching Gentiles, and thus he was keeping the Sabbath in Gentile company. Even though it does not say it directly, the context ocertainly implies that he was teaching the keeping of the Sabbath to these Gentiles as well.
So the question has to arise: In light of this "no law, law done away, Sabbath and holy days done away" teaching, was Paul teaching one thing and doing another? Paul gives no indication of a change. If the Sabbath was done away, Paul missed an opening to clue them in.
John W. Ritenbaugh
The Covenants, Grace, and Law (Part Twenty-Four)