John 21 15 19 - Is a Protestant New Testament Scholar?

Protestant lutheran new testament scholar admits that christ commissioned peter to be head shepherd over israel, as his successor in john 21 15 19. In early first century palestinian jewish writings, joshua is upon the cathedra, or seat, or chair of moses. Later popes and church fathers used John 21 15 19 as a proof text of the papacy,. of the supremacy of peter - they are not wrong.