Job 20:5

Zophar did not argue that wicked people are never happy. Everybody can see that wicked people often enjoy their evil deeds. But Zophar said that his happiness could not last.

He was partly correct. An evil life does not really satisfy anyone (Luke 15:13-17). Only the things that God gives can really satisfy us (John 4:13-14). So we need to believe Jesus (John 7:27-28). Moreover, in the end, God will be the judge of everyone. God will punish evil people who have not confessed their evil deeds to him (Revelation 20:12-15).

But Zophar argued his ideas for a particular reason. Zophar wanted to prove that Job was not innocent. So Zophar imagined the things that might happen to a wicked man. Zophar wanted Job to realise that similar things had happened to Job.