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.
The Brenton translation of the Septuagint is in the public domain.