This verse lists the descendants of Caleb, the son of Hur, who was the son of Ephrathah. It highlights the genealogy of the tribe of Judah, tracing their lineage through Caleb's family. The mention of Ephrathah signifies the region where Caleb's family originated from. This genealogical record serves to establish the historical and ancestral roots of the tribe of Judah, emphasizing the importance of lineage and heritage in biblical narratives.