'Families' in the Bible

So I stationed the people by families behind the wall in the lower exposed areas, equipping them with their swords, spears, and bows.

Some of the heads of the families contributed to the work. The governor contributed 1,000 gold drachmas to the treasury, along with 50 basins, and 530 priestly garments.

Some of the heads of the families gave to the treasury 20,000 gold drachmas and 2,200 silver units for the work.

The next day, the heads of the families of all the people were gathered together, along with the priests and the descendants of Levi, to meet with Ezra the scribe in order to understand the words of the Law.

We the priests, the descendants of Levi, and the people cast lots to determine when to bring the wood offering into the Temple of our God, just as our ancestors' families were appointed annually to maintain the altar fire of the LORD our God, as recorded in the Law.

along with his associates, the leaders of the families, numbered 242, along with Amashsai, the son of Azarel, the son of Ahzai, the son of Meshillemoth, the son of Immer,