Nehemiah 7:15 lists the sons of Zerubbabel, who was a prominent leader in the restoration of Jerusalem after the exile. This genealogy serves as a historical record, tracing the lineage of Zerubbabel and his descendants. It highlights the importance of preserving family records and heritage, showing God's faithfulness in maintaining the line of David despite the challenges faced by the Israelites. The mention of Zerubbabel also signifies the continuity of God's covenant promises and the restoration of Jerusalem as a symbol of hope and renewal.