What does 1 Chronicles 15:10 mean?

of the sons of Gershom, Joel the chief, and his brothers one hundred thirty;

of the sons of Elizaphan, Shemaiah the chief, and his brothers two hundred;

of the sons of Hebron, Eliel the chief, and his brothers eighty;

David called for Zadok and Abiathar the priests, and for the Levites, for Uriel, Asaiah, Joel, Shemaiah, Eliel, and Amminadab,

and said to them, “You are the heads of the fathers’ households of the Levites. Sanctify yourselves, both you and your brothers, that you may bring the ark of Yahweh, the God of Israel, up to the place that I have prepared for it.

For because you didn’t carry it at first, Yahweh our God broke out in anger against us, because we didn’t seek him according to the ordinance.”