Treasury of Scripture Knowledge

Summary

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

Bible References

Twenty years old

Numbers 4:3
from thirty years old and upward even until fifty years old, all who enter into the service, to do the work in the Tent of Meeting.
1 Chronicles 23:24
These were the sons of Levi after their fathers' houses, even the heads of ancestral houses of those who were counted individually, in the number of names by their polls, who did the work for the service of the house of the LORD, from twenty years old and upward.