Job 6:9 - Ellicott's Commentary On The Whole Bible

Even that it would please God... — The sequence of thought in these verses is obscure and uncertain. The speaker may mean that, notwithstanding all that might befall him, his consolation would still be that he had never denied the words of the Holy One. The words “I would harden myself in sorrow” are the most doubtful, not occurring elsewhere in Scripture. Some render the two clauses, “I would exult, or rejoice, in pain that spareth not;” but “Let him not spare,” or “Though he spare not,” seems preferable. Others render, “Though I burn in sorrow.”