Chronicles II 31:16

16 besides the increase of males from three years old and upward, to every one entering into the house of the Lord, according to a daily rate, for service in the daily courses of their order.

Chronicles II 31:16 Meaning and Commentary

2 Chronicles 31:16

Beside their genealogy of males, from three years old and
upwards
Their office was not only to give to the priests, but to those of their males in their genealogy, who were three years old and upwards; for under that age, according to Kimchi, they were not fit to come into the temple; nor have they knowledge to keep what is put into their hands; nor fit to handle offerings, lest they should defile them; but at that age they might be taught how to hold them, and be used to it; but as for females, he says, they were not admitted at any age:

even unto everyone that entereth into the house of the Lord;
of the said age, and in the genealogy and register of the priests:

his daily portion for their service in their charges, according to
their courses;
food for every day, in consideration of their service in their several wards, according to their courses in turn.

Chronicles II 31:16 In-Context

14 And Core, the of Jemna the Levite, the porter eastward, over the gifts, to distribute the first-fruits of the Lord, and the most holy things,

15 by the hand of Odom, and Benjamin, and Jesus, and Semei, and Amarias, and Sechonias, by the hand of the priests faithfully, to give to their brethren according to the courses, as well to great as small;

16 besides the increase of males from three years old and upward, to every one entering into the house of the Lord, according to a daily rate, for service in the daily courses of their order.

17 This the distribution of the priests according to the houses of their families; and the Levites in their daily courses from twenty years old and upward in order,

18 to assign stations for all the increase of their sons and their daughters, for the whole number: for they faithfully sanctified the holy place.