He 'incarnates' the nation's political ideals. = The nation's political ideals are 'incarnated' in him.
He treats her as though she's the devil 'incarnate'. [=a human devil; a very evil person]
goodness/evil 'incarnate'
(..) Alessa Gillespie. She led you to burn an innocent child. But you will not deny your guilt... ...and you cannot deny her pain! That child was sin incarnate. No, it's you who have sinned. You darkened the heart of an innocent... ...and now you cower in the face of Alessa's revenge. (..)2006 Silent Hill