Job 31:38 - Ellicott's Commentary On The Whole Bible

Or that the furrows likewise thereof complain. — Rather, Or if the furrows thereof weep together — a strong impersonation to express the consequence of oppression and wrong-doing. It is to be observed that throughout this defence Job has far more than traversed the indictment of his friends. He has shown that he has not only not broken the moral law, as they insinuated, but, much more, has shown himself exemplary in all the relations of life, so that, according to the narrator of the history, he was not only one that feared God and eschewed evil (Job 1:1), but also was perfect, i.e., of sincere and consistent conduct and upright.