New Defender's Study Bible Notes
10:15 What God hath cleansed. The cleansing work of Christ on the cross applied not only to the forgiveness of sins, but even to the distinction between clean and unclean animals (compare Leviticus 11, I Timothy 4:4-5). Most especially it removed the barrier between Jew and Gentile, as was made plain to Peter by this vision. Note particularly Ephesians 4:11-22.