Bamidbar 4:22

22 Take also the census of the Bnei Gershon, throughout the bais avot of them, by their mishpekhot;

Bamidbar 4:22 Meaning and Commentary

Numbers 4:22

Take also the sum of the sons of Gershon
As well as of the sons of Kohath; for though Gershon was Levi's eldest son, yet his posterity were not excused from the service of the tabernacle, and bearing things of it in journeying:

throughout the houses of their fathers, by their families;
all in their several houses, and in the several families in those houses, that were of the age next mentioned, were to be numbered.

Bamidbar 4:22 In-Context

20 But they shall not go in to look for a single instant at hakodesh, lest they die.

21 And Hashem spoke unto Moshe, saying,

22 Take also the census of the Bnei Gershon, throughout the bais avot of them, by their mishpekhot;

23 From shloshim shanah (thirty years old) and upward until chamishim shanah (fifty years old) shalt thou number them; all that enter to serve the tz’va (holy militia service of Hashem), to labor in the Avodah in the Ohel Mo’ed.

24 This is the Avodat Mishpekhot Gershoni, as relates to service and massa (burden):