Ezra 3:8

Now in the second year of their coming to God’s house at Jerusalem, in the second month, Zerubbabel the son of Shealtiel, Jeshua the son of Jozadak, and the rest of their brothers the priests and the Levites, and all those who had come out of the captivity to Jerusalem, began the work and appointed the Levites, from twenty years old and upward, to have the oversight of the work of the LORD’s house.