I didn’t know God told Peter he’d changed his mind. It would have made the new dispensation more appealing though what with gentiles having previously had no dietary restrictions. But why did the Jews, like the Christians, also abandon the animal sacrifice laws, and when?
This Christian writer finds sound reasons for the dietary laws which are within human reason and understanding but nonetheless divine and benevolent commandments in his view.
I still maintain that contemporary English-speakers are going to think unclean means dirty until a better translation of the word is found.