Setting his defense in order represents deciding what he will say to defend himself. AT: "I have thought through how I will defend myself" or "I have decided how I will explain myself" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Job uses this question to express his belief that since he is right, no one would argue against him. AT: "I do not believe that anyone would argue against me in court." (See: [[rc://en/ta/man/translate/figs-rquestion]])