Mark 8:32

Until now, Jesus had only hinted at His sufferings (cf. Mark 2:20; Mark 4:33-34; Mark 7:14-15; Mark 7:17-23). The disciples were unprepared for this clear revelation that Messiah would suffer, die, and rise again. Peter understood it but refused to accept it. He could not reconcile this view of Messiah with the popular one. The word Mark chose to describe Peter’s rebuke is a strong one (Gr. epitimao). It is the same one he used to describe Jesus silencing demons (cf. Mark 1:25; Mark 3:12). Peter reacted with "an air of conscious superiority." [Note: Swete, p. 180.]