ISB ~ Acts 10 v14

common or unclean:As a faithful Jew, Peter declines to eat foods forbidden by the Torah (Lev 11). The vision labors to overcome his objection. It teaches him (1) that the dietary restrictions of the Mosaic Law that distinguish between acceptable (clean) and unacceptable (unclean) foods are now lifted in the New Covenant, and (2) that the distinction between foods is a legal allegory for the moral and religious distinction between Israel (clean) and the Gentiles (unclean) maintained under the Old Covenant. Lifting the Mosaic ban on unclean foods is thus a sign that the Gentiles are no longer banned from full and equal acceptance into the covenant (10:28).