1 Chronicles 23:27

For by the last words of David the sons of Levi were numbered from twenty years old and upward.

1 Chronicles 23:24

These were the sons of Levi by their fathers' houses, the heads of fathers' houses as they were listed according to the number of the names of the individuals from twenty years old and upward who were to do the work for the service of the house of the LORD.

2 Samuel 23:1

Now these are the last words of David: The oracle of David, the son of Jesse, the oracle of the man who was raised on high, the anointed of the God of Jacob, the sweet psalmist of Israel:

1 Chronicles 23:3

The Levites, thirty years old and upward, were numbered, and the total was 38,000 men.

Psalm 72:20

The prayers of David, the son of Jesse, are ended.

Treasury of Scripture Knowledge

Summary

For by the last words of David the Levites were numbered from twenty years old and above:

General references

Bible References

By the last

1 Chronicles 23:3
The Levites, thirty years old and upward, were numbered, and the total was 38,000 men.
2 Samuel 23:1
Now these are the last words of David: The oracle of David, the son of Jesse, the oracle of the man who was raised on high, the anointed of the God of Jacob, the sweet psalmist of Israel:
Psalm 72:20
The prayers of David, the son of Jesse, are ended.

General references

Numbers 4:35
from thirty years old up to fifty years old, everyone who could come on duty, for service in the tent of meeting;

The Holy Bible, English Standard Version® copyright © 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.