Job 36:10 (ESV)

10 He opens their ears to instruction and commands that they return from iniquity.

Through suffering, God prepares his people to listen to his calls for repentance (as brought by God’s messengers, Job 33:32). Elihu’s argument is true, taken by itself. Countless believers can testify to the purifying effect that suffering has had on their lives (Psalm 119:67). However, as readers we know that it is not a valid explanation of Job’s suffering.