In this video, Mr. William C. Michael explains that Catholics who say that St. Paul rebuked St. Peter in Galatians 2 do not interpret the passage according to Church tradition, but according to the easily refutable false teaching of Protestants. St. Paul did not, in fact, rebuke St. Peter for his own error or sin (for he knew the truth and was practicing it!), but rebuked the Jews for their false judgment of St. Peter.
Mr. William C. Michael
Classical Liberal Arts Academy