I will not meet thee as a man. — The words in italics show that the phrase is difficult. Omitting them we get I shall not meet a man, i.e., there will be none to oppose me, or I will not spare a man.
Related Commentaries of Isaiah 47:3
Isaiah 47:3
3 Thy nakedness shall be uncovered, yea, thy shame shall be seen: I will take vengeance, and I will not meet thee as a man.