Reaiah (or Jehoraah) the son of Shobal ... — See 1 Chronicles 2:52, which also calls Shobal “father of Kirjath-jearim.” 1 Chronicles 2:53 adds that the Zorathites (Authorised Version, Zareathites) came of the clans of Kirjath-jearim. The present verse supplements the data of 1 Chronicles 2, by putting the clans of Zorah in immediate genealogical connection with Shobal. Their names — Ahumai and Lahad — occur nowhere else.
Related Commentaries of 1 Chronicles 4:2
1 Chronicles 4:2
2 And Reaiahb the son of Shobal begat Jahath; and Jahath begat Ahumai, and Lahad. These are the families of the Zorathites.