New Defender's Study Bible Notes
11:4 thou hast said. Job had not said any such thing. He had acknowledged that he was a sinner (Job 7:20; etc.). But he had confessed all known sin and had offered sacrifices, not only for himself but also for his family (Job 1:5).
11:7 find out God. This rhetorical question by Zophar does at least indicate his realization that God was the infinite Creator, even though he had little understanding of His grace and love.
11:8 high as heaven. Comparing the infinitude of God to heaven indicates that Zophar had a realistic concept of the magnitude of the universe, quite unlike the claim of some critics that the Bible teaches that the stars were affixed to a celestial dome of some kind.