Family is found 76 times in the Scripture, 75 times in the Old Testament and 1 times in the New Testament, Families is used 164 times in the Old Testament. Most of the time it is simply the plural of family.
Most of the Old Testament references refer not just to a Father and Mother and their children but to their children’s children and sometimes for several generations.
i.e. Numbers 26:44-45 Of the children of Asher after their families: of Jimna, the family of the Jimnites: of Jesui, the family of the Jesuites: of Beriah, the family of the Beriites. Of the sons of Beriah: of Heber, the family of the Heberites: of Malchiel, the family of the Malchielites.
The Apostle Paul uses family to refer to all the saved.
Ephesians 3:15 Of whom the whole family in heaven and earth is named,