Eliphaz asks, "Who that was innocent ever perished?" and says he has seen those who plow iniquity and sow trouble reap the same (Job 4:7–8). His point is that suffering reflects moral cause and effect (Job 4:7–9).
In Job 4:7–9, Eliphaz urges Job to think back on what “normally” happens in life. He frames a rule drawn from observation: truly innocent people do not end up destroyed, while those who cultivate wrongdoing and trouble end up harvesting the same. These lines come early in the first cycle of speeches, after Job has lamented his suffering and cursed the day of his birth (Job 3). Eliphaz begins his reply by appealing to Job’s past counsel to others and then pivots to his own counsel, grounding it in what he claims is consistent experience.
Eliphaz frames his counsel as a rule drawn from lived observation. He tells Job to “remember” and to consult what life usually looks like (explicit). His core claim is that he has not known truly innocent or upright people to end in total ruin (explicit), while those who “plow” wrongdoing and “sow” trouble tend to “reap” matching results (explicit).
A careful answer keeps the immediate passage, the book's argument, and the whole-Bible storyline together, so the question is answered in context instead of as a detached idea.
Start with Job 4:7-8, then read the surrounding section so the answer stays connected to the passage's flow.
7"Remember, now, whoever perished, being innocent? Or where were the upright cut off?
8According to what I have seen, those who plow iniquity, And sow trouble, Reap the same.