It was not with temerity and arrogance that the prophet promised his own conscience that he would go, but with fidelity, for his lips were cleansed and the iniquity of his sins washed away and purified. When the Lord had said to Moses, therefore, “Come, I will send you to Pharaoh, the king of Egypt,” [Exo 3:10.] he too responded with humility, not contempt, saying, “I beg you, Lord, to send another because I am not worthy,” or as we read in Hebrew, “Send him whom you were about to send,” [Exo 4:10-13.] for he who had been educated with all the wisdom of the Egyptians had heard nothing about the cleansing of his lips. Isaiah also offered himself for ministry by the grace of the Lord with which he was cleansed, not by his own merit. But others think that I ...