Commentators explain that this verse clarifies the lineage of the Zorathites, a family from the town of Zorah. They connect this passage to 1 Chronicles 2, noting that 'Reaiah' in this verse is the same person as 'Haroeh' in 1 Chronicles 2:52. These details, while seemingly minor, show the Bible's internal consistency and the Chronicler's careful work in tracing the heritage and land settlement of God's people.