The writer uses parallel rhetorical questions in each of these verses to emphasize Job's lack of strength to endure suffering. (See: [[rc://en/ta/man/translate/figs-parallelism]])
Job describes the weakness of his body by saying that he is not as strong as rocks and bronze to emphasize his lack of strength. These rhetorical questions may be written as statements. AT: "I am not as strong as the rocks. My flesh is not as strong as metal." (See: [[rc://en/ta/man/translate/figs-rquestion]])