Adam Clarke on Job 11:4

My doctrine is pure - לקחי likchi, "my assumptions." What I assume or take as right, and just, and true, are so; the precepts which I have formed, and the practice which I have founded on them, are all correct and perfect. Job had not exactly said, My doctrine and way of life are pure, and I am clean in thine eyes; but he had vindicated himself from their charges of secret sins and hypocrisy, and appealed to God for his general uprightness and sincerity: but Zophar here begs the question, in order that he may have something to say, and room to give vent to his invective.