2 Chronicles 31:16-18

16only considering genealogical records, to the males three years old and upward—to all who entered into the House of Adonai, to perform the daily duties according to their responsibilities and their divisions—

17to the kohanim who were genealogically registered by their ancestral houses, as well as to the Levites 20 years old and upward, according to their duties and their divisions.

18The genealogical registry included all their little ones, their wives and sons and daughters of the entire assembly. Thus in their faithfulness they consecrated themselves as holy.