Ezra 3:8 GNT

[8] So in the second month of the year after they came back to the site of the Temple in Jerusalem, they began work. Zerubbabel, Joshua, and the rest of their people, the priests, and the Levites, in fact all the exiles who had come back to Jerusalem, joined in the work. All the Levites twenty years of age or older were put in charge of the work of rebuilding the Temple.