Ezra 3:8 ICB

[8] It was in the second year after their arrival at the Temple of God in Jerusalem. In the second month Zerubbabel and Jeshua began the work. So did the rest of their fellow priests and Levites. And all who had returned from captivity to Jerusalem began to work. They chose Levites 20 years old and older to be in charge of the building of the Temple of the Lord.