Isaiah is commissioned in ch 6 in the context of a vision of the Holy one of Israel. He discovers that after issuing judgments on Judah in ch 5 he now is himself judged. 'Woe to you' becomes Woe is me, I am ruined. God then takes the prophets guilt away and this response of grace inspires a desire to take up the commission by God. But it will be a ministry where they will be for ever hearing but never understanding. Will this be the end of the story?