Peter has seen enough to be convinced that Jesus is Messiah, the Christ – even if he still can’t grasp why the Lord’s mission will involve suffering. His personal witness in verse 20 is magnified when he, together with James and John, sees Jesus glorified. Peter’s confession and the ‘Transfiguration’ are defining moments in Jesus’ ministry. They also point us to a future reality that shakes us out of our limited world view and wakes us up to a glorious hope. Lord let your glory fall!