'Families' in the Bible

So I stationed people behind the lowest sections of the wall, at the vulnerable areas. I stationed them by families with their swords, spears, and bows.

The following are those who came from Tel-melah, Tel-harsha, Cherub, Addon, and Immer, but were unable to prove that their families and ancestors were Israelite:

and his relatives, the leaders of families: 242. Amashsai son of Azarel, son of Ahzai, son of Meshillemoth, son of Immer,

In the days of Joiakim, the leaders of the priestly families were: Meraiah of Seraiah, Hananiah of Jeremiah,

In the days of Eliashib, Joiada, Johanan, and Jaddua, the leaders of the families of the Levites and priests were recorded while Darius the Persian ruled.

Levi’s descendants, the leaders of families, were recorded in the Book of the Historical Records during the days of Johanan son of Eliashib.