This verse lists the total number of Levites who returned with the exiles to Jerusalem, which was 284. The Levites were responsible for the religious duties and service in the temple, highlighting the importance of worship and spiritual leadership in the community. The specific number mentioned reflects the meticulous record-keeping and attention to detail in the restoration of Jerusalem, showing the care taken in rebuilding the city and its religious practices. It also signifies the faithfulness of God in preserving the Levites and their role in the worship of the Lord despite the challenges they faced.