שמות, פרק ו׳, פסוק י״ז

Tracing the tribal lineage begins with the introduction of Gershon's sons. The record names Libni and Shimei, making it clear that Gershon had no other children besides these two [אבן עזרא].

A specific distinction is made regarding their social standing, setting them apart from the rest of the tribe. A unique emphasis is placed on their family units, a detail that is notably absent when the records later outline the descendants of Kohath and Merari. This distinction serves to define the exact scope of their leadership. The sons of Gershon did not attain the level of greatness necessary to lead the entire generation or even their whole tribe. Instead, their authority and influence were strictly confined to their own families. This limited scope of power stands in sharp contrast to the descendants of Kohath and Merari, who served as leaders on a much broader scale during that era [העמק דבר].