They were responsible for the Ark, the table, the menorah, the altars, and the implements of the Sanctuary used in service with them, the curtain and all involved with its use.
At that time Adonai set the tribe of Levi apart to carry the Ark of the Covenant of Adonai, to stand before Adonai to serve Him and to pronounce blessings in His Name—as is the case to this day.