What does Proverbs 10:2 mean?

A person may acquire a storehouse of treasures by wicked actions and gain fleeting pleasure from them, but in the end, they amount to nothing. They cannot give true joy or peace. Nor can they prolong life. A billionaire who has accumulated enormous wealth, whether honestly or dishonestly, by cleverness or by outright violence, cannot buy even one more day to add to his allotted lifespan. History is full of stories about the unexpected death of wealthy, powerful people. Furthermore, when death separates an unrighteous rich person from his wealth, he has nothing to look forward to beyond the grave except suffering and eternal separation from God (Mark 8:38; Luke 12:20).

On the other hand, as Solomon points out, righteousness delivers from death. The word, "righteousness," in this verse characterizes the person who does what is right and good on behalf of others and honors God. The righteous person has nothing to fear about death, because he has eternal life and an eternal reward (Philippians 3:8–9).