'Itself' in the Bible

The land will mourn, every family by itself; the family of the house of David by itself and their wives by themselves; the family of the house of Nathan by itself and their wives by themselves;

the family of the house of Levi by itself and their wives by themselves; the family of the Shimeites by itself and their wives by themselves;

all the families that remain, every family by itself and their wives by themselves.