Ezra 2:18 lists the descendants of Adonikam who returned from exile in Babylon to Jerusalem. This verse highlights the importance of genealogy and the restoration of the Jewish community after the exile. It emphasizes God's faithfulness in preserving the lineage of His people and fulfilling His promises. The mention of Adonikam signifies the continuity of God's covenant with His chosen people despite the challenges they faced. This verse serves as a reminder of God's sovereignty and the restoration of His people to their homeland.