What does 2 Chronicles 31:13 mean?

Azariah the chief priest, of the house of Zadok, answered him and said, “Since people began to bring the offerings into Yahweh’s house, we have eaten and had enough, and have plenty left over, for Yahweh has blessed his people; and that which is left is this great store.”

Then Hezekiah commanded them to prepare rooms in Yahweh’s house, and they prepared them.

They brought in the offerings, the tithes, and the dedicated things faithfully. Conaniah the Levite was ruler over them, and Shimei his brother was second.

Kore the son of Imnah the Levite, the gatekeeper at the east gate, was over the freewill offerings of God, to distribute Yahweh’s offerings and the most holy things.

Under him were Eden, Miniamin, Jeshua, Shemaiah, Amariah, and Shecaniah, in the cities of the priests, in their office of trust, to give to their brothers by divisions, to the great as well as to the small;

besides those who were listed by genealogy of males, from three years old and upward, even everyone who entered into Yahweh’s house, as the duty of every day required, for their service in their offices according to their divisions;