1 Chronicles 23:3
descendants of Levi 30 years old and above were counted for a total of 38,000.
1 Chronicles 23:24
These were the descendants of Levi according to their ancestral households, with family heads documented according to the names of persons 20 years and older who were appointed to perform work in service to the Temple of the LORD.
Numbers 4:2-49
"Take a census of the descendants of Kohath from among the descendants of Levi according to their tribes and ancestral houses
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 a census of the descendants of Kohath from among the descendants of Levi according to their tribes and ancestral houses
Thirty and eight
Numbers 4:48
was 8,580.
General references
Numbers 4:35
from 30 to 50 years old that is, everyone who entered the service to perform work at the Tent of Meeting.