
Of the children of Naphtali, throughout their generations, after their families, by the house of their fathers, according to the number of the names, from twenty years old and upward, all that were able to go forth to war;
In simpler terms, this verse is saying: Among the descendants of Naphtali, over time, based on their family groups and according to the count of their names, from the age of 20 and above, all those who could join in fighting were registered.
* Work in progress - there may be occasional inaccuracies