Ezra 3:8

In the second month of the second year after they arrived at God’s house in Jerusalem, Zerubbabel son of Shealtiel, Jeshua son of Jozadak, and the rest of their brothers, including the priests, the Levites, and all who had returned to Jerusalem from the captivity, began to build. They appointed the Levites who were 20 years old or more to supervise the work on the Lord’s house.

Numbers 4:3

men from 30 years old to 50 years old—everyone who is qualified to do work at the tent of meeting.

1 Chronicles 23:4

“Of these,” David said, “24,000 are to be in charge of the work on the Lord’s temple, 6,000 are to be officers and judges,

1 Chronicles 23:24-32

These were the sons of Levi by their ancestral houses—the heads of families, according to their registration by name in the headcount—20 years old or more, who worked in the service of the Lord’s temple.

Ezra 4:3

But Zerubbabel, Jeshua, and the other leaders of Israel’s families answered them, “You may have no part with us in building a house for our God, since we alone must build it for Yahweh, the God of Israel, as King Cyrus, the king of Persia has commanded us.”

Treasury of Scripture Knowledge

Summary

Ezra 3:8

Now in the second year of their coming unto the house of God at Jerusalem, in the second month, began Zerubbabel the son of Shealtiel, and Jeshua the son of Jozadak, and the remnant of their brethren the priests and the Levites, and all they that were come out of the captivity unto Jerusalem; and appointed the Levites, from twenty years old and upward, to set forward the work of the house of the LORD.

Twenty years old

Numbers 4:3

1 Chronicles 23:24

Bible References

Twenty years old

men from 30 years old to 50 years old—everyone who is qualified to do work at the tent of meeting.