2 Chronicles 31:16

Young's Literal Translation 1862

apart from their genealogy, to males from a son of three years and upward, to every one who hath gone in to the house of Jehovah, by the matter of a day in its day, for their service in their charges, according to their courses;

Cross References

1 Chronicles 23:3

and the Levites are numbered from a son of thirty years and upward, and their number, by their polls, is of mighty men thirty and eight thousand.

Ezra 3:4

And they make the feast of the booths as it is written, and the burnt-offering of the day daily in number according to the ordinance, the matter of a day in its day;