Numbers 4:2

Take the sum of the children of Caath from the midst of the sons of Levi, after their families, according to the houses of their fathers' households;

Take the sum of the sons of Kohath from among the sons of Levi, after their families, by the house of their fathers,

“Take a census of the sons of Kohath from among the sons of Levi, by their families, by their fathers’ houses,