1 Chronicles 23:3

were numbered from the age of thirty years and upward; and their number by their polls, man by man, was thirty-eight thousand.

1 Chronicles 23:24

These are the sons of Levi after the houses of their fathers, even the chief of the fathers, as they were counted by number of names by their polls, that did work in the ministry of the house of the LORD, from the age of twenty years and upward.

Numbers 4:2-49

Take the sum of the sons of Kohath from among the sons of Levi, after their families, by the houses of their fathers,

Treasury of Scripture Knowledge

Summary

Now the Levites were numbered from the age of thirty years and upward: and their number by their polls, man by man, was thirty and eight thousand.

The levites

Thirty and eight

General references

Bible References

The levites

Numbers 4:2
Take the sum of the sons of Kohath from among the sons of Levi, after their families, by the houses of their fathers,

Thirty and eight

Numbers 4:48
those that were numbered of them, were eight thousand five hundred and eighty.

General references

Numbers 4:35
from thirty years old and upward even unto fifty years old, all that enter into the host, to minister in the tabernacle of the testimony.