Verse 16

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;

Referenced Verses

• Ezra 3:4 : 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;
• Lev 21:22-23 : 22 `Bread of his God -- of the most holy things, and of the holy things -- he doth eat; 23 only, unto the vail he doth not enter, and unto the altar he doth not draw nigh; for blemish `is' in him; and he doth not pollute My sanctuaries; for I `am' Jehovah, sanctifying them.'
• 1 Chr 23:3 : 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.