ISB ~ Acts 21 v28

against … the law and this place:The charge that Paul was slandering both the Torah and the Temple is reminiscent of the accusations against Stephen in 6:13.

Greeks into the temple:An unthinkable violation of Temple law. Gentiles were permitted to gather and worship in the outermost court of the sanctuary, but they were absolutely forbidden to penetrate into the inner courts, where the people of Israel alone had privilege of access. Separating the inner courts and the outer court was a partition wall with plaques posted near its gates that threatened death for Gentile trespassers. Luke contends that Paul was innocent of the charge—his Greek friend “Trophimus” was seen in the city, not the inner precincts of the Temple (21:29).