Ezra 3:8 ERV

[8] So in the second month of the second year after they came to the Temple in Jerusalem, Zerubbabel son of Shealtiel and Jeshua son of Jozadak began the work. Their brothers, the priests, Levites, and everyone who came back to Jerusalem from captivity began working with them. They chose Levites who were 20 years old and older to be the leaders in the building of the LORD's Temple.