From Job 38 through 41 God alone speaks. He describes Creation, foundations, the leviathan. The idea for these things began in God and God brought them to fruition. What they have to do with Job seeking justice, I do not understand. I can only read the words and trust the Holy Spirit to make things clear to me, Philippians 3:15. Here is what I do know.
Job says, like David, that God’s work is beyond comprehension, “things I did not understand, things too wonderful for me to know,” Job 42:3, Psalm 131:1, and Psalm 139:6.
The hope here? God spoke to Job and told him of these marvelous things knowing Job would not understand, after all He is God and knows everything. Lack of understanding does not keep us from God’s presence nor does it keep us from speaking with God. In 42:3 Job is responding to God. That’s not all but that’s another post.