Is there any reason why the sons of the fathers (Kohath, Gershon) are referred to as being “by their fathers’ houses and by their clans”?
Nombres 4:22 (NEG79)
22 Compte aussi les fils de Guerschon, selon les maisons de leurs pères, selon leurs familles;
The phrase serves as brackets around the section that it is designed to mark off. This literary feature is not uncommon in the Bible and is associated with a literary device known as chiasm.
2 Compte les fils de Kehath parmi les enfants de Lévi, selon leurs familles, selon les maisons de leurs pères,