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16except those enrolled by genealogy, males from three years old and upwards, all who entered the house of the LORD as the duty of each day required, for their service according to their offices, by their divisions. 17The enrollment of the priests was according to their fathers' houses; that of the Levites from twenty years old and upwards was according to their offices, by their divisions.
2 Chronicles 31:16-17 (RSV)