When speaking or writing to Jews the Apostles Paul was as a Jew. He persuaded Jews ('The Epistle to the Romans' chapters 1 and 2) that his ministry increased conformance of people to the righteousness found in the Law and did not oppose the Law. When speaking and writing to Gentiles ('The Epistle to the Galatians') he drew lessons from Genesis and historical religious aspects leading up to the Law but hardly mentioned the Law and rebuked judaisation of Gentiles in very strong terms. So he saw a divided attitude to the Law as an essential part of God's plan for salvation - Jews honouring Law and finding the righteousness it proclaims but not imposing Law on Gentiles - and Gentiles honouring the work of God in the patriarchs and Moses and giving of the Law but not trying to become adherents of it other than learning spiritual lessons from it. This is fully in line with the edict of the Jerusalem Apostles of which Paul had been a chief emissary. Peter's warning is that, by misunderstanding this, people distort it to their own agenda but in doing so bring destruction on themselves - yet still people take that risk.
