 There's a lot of reasons to look at first Peter's sideways. What's this about slaves obeying harsh masters because Jesus, or women not braiding hair because authority, or husbands being nice to wives because they're so weak, and so on. There's things about the person who's suffered in the flesh, is done with sin, and the gospel being proclaimed to the dead. But this all makes Peter's theme a little problematic, that if we suffer now for doing good, put our heads down, and don't make waves, Jesus will make it all okay in the end.