דברי הימים א, פרק ד׳, פסוק ב׳

Biblical family records often serve to complete and expand upon family trees that were mentioned only briefly before, focusing heavily on the founding fathers of specific families and cities. In tracing this particular lineage, the record focuses on a man named Reaiah. The primary approach among commentators is that he is actually Haroeh, the son of Shobal, who was introduced in an earlier chapter. [רד״ק] notes that slight variations in the spelling of a person's name are a common feature in biblical history. At the same time, [רש״י] points out a distinct style of writing in these records. The text will sometimes introduce a man as a father who had children, even if he was never explicitly listed as a son beforehand, simply because the record is steadily counting one generation after another.

The lineage ultimately leads to the families who settled in the city of Zorah [ביאור שטיינזלץ]. Earlier records stated in broad terms that the families of Zorah descended from Shobal. Now, the exact formation of this family line is made clear. Men named Jahath, Ahumai, and Lahad are identified as the primary founders and leaders of the Zorathite families [רד״ק, מלבי״ם].