ISB ~ Acts 10 v28

unlawful:Palestinian Jews went to great lengths to avoid social contact with Gentiles. They generally declined both their hospitality and their food for fear of legal defilement. Peter’s actions were naturally criticized by conservative Jewish believers (11:2-3).

not call any man common:The vision taught Peter that the Jews and the Gentiles were no longer separated by covenant barriers in the messianic age (Eph 2:1116). See note on Acts 10:14.