And he said unto them, Ye know how that it is an unlawful thing for a man that is a Jew to keep company, or come unto one of another nation; but God hath shewed me that I should not call any man common or unclean. Ye know how that it is an unlawful thing, etc. - He addressed the whole company, among whom, it appears, there were persons well acquainted with Jewish customs; probably some of them were Jewish proselytes.
But God hath showed me, etc. - He now began to understand the import of the vision which he saw at Joppa. A Gentile is not to be avoided because he is a Gentile; God is now taking down the partition wall which separated them from the Jews.