Ezra 3:8 RSV

[8] Now in the second year of their coming to the house of God at Jerusalem, in the second month, Zerub′babel the son of She-al′ti-el and Jeshua the son of Jo′zadak made a beginning, together with the rest of their brethren, the priests and the Levites and all who had come to Jerusalem from the captivity. They appointed the Levites, from twenty years old and upward, to have the oversight of the work of the house of the LORD.