In Job 9:33 we read, “If only there were a mediator between us, someone who could bring us together.”
Job had been talking about the utter lost-ness of his position. That no matter how much he tried, no matter how well he kept the law, no matter how perfect he could manage to live (and he did live an innocent life before God), it didn’t bridge that gap between him and God. We find Job’s heart crying out for a mediator between himself and God.