John Gill Commentary Numbers 1:42

"Of the children of Naphtali, their generations, by their families, by their fathers` houses, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;" — Numbers 1:42 (ASV)

Of the children of Naphtali, throughout their generations ,
&c.] (See Gill on Numbers 1:20).