Shimei had four sons: Jahath, Zina, Jeush, and Beriah, in order of age. Jeush and Beriah did not have many descendants, so they were counted as one clan.
His oldest son, Amram, was the father of Aaron and Moses. (Aaron and his descendants were set apart to be in charge of the sacred objects forever, to burn incense in the worship of the LORD, to serve him, and to bless the people in his name.
These were the descendants of Levi, by clans and families, every one of them registered by name. Each of his descendants, twenty years of age or older, had a share in the work of the LORD's Temple.
and were assigned the following duties: to help the priests descended from Aaron with the Temple worship, to take care of its courtyards and its rooms, and to keep undefiled everything that is sacred;
to be responsible for the bread offered to God, the flour used in offerings, the wafers made without yeast, the baked offerings, and the flour mixed with olive oil; to weigh and measure the Temple offerings;
and whenever offerings to the LORD are burned on the Sabbath, the New Moon Festival, and other festivals. Rules were made specifying the number of Levites assigned to do this work each time. The Levites were assigned the duty of worshiping the LORD for all time.
They were given the responsibility of taking care of the Tent of the LORD's presence and the Temple, and of assisting their relatives, the priests descended from Aaron, in the Temple worship.