Job demands his "rights," as though he somehow deserves them. Elihu's approach, however, is interesting and pertinent. "God is greater!" he exclaims, which is absolutely correct. It should have been Job's mindset from the beginning, but he approaches God as an equal or perhaps even lower!
Job's primary concern is "Why?" Job's three "friends'" primary concern is God's justice. Yet Elihu argues that God is inscrutable and far greater by any human standard of measurement. So to compare God's judgments against man's familiar standards lessens God from what He is.
Paul in Romans 11:33-36 provides some insight here:
Oh, the depth of the riches both of the wisdom and knowledge of God! How unsearchable are His judgments and His ways past finding out! "For who has known the mind of the Lord? Or who has become His counselor?" "Or who has first given to Him and it shall be repaid to him?" For of Him and through Him and to Him are all things, to whom be glory forever. Amen.
John W. Ritenbaugh
Job, Self-Righteousness, and Humility