KJV:
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.
NASB:
The Levites were numbered from thirty years old and upward, and their number by census of men was 38,000.
KJV:
These were the sons of Levi after the house of their fathers; even the chief of the fathers, as they were counted by number of names by their polls, that did the work for the service of the house of the LORD, from the age of twenty years and upward.
NASB:
These were the sons of Levi according to their fathers' households, even the heads of the fathers' households of those of them who were counted, in the number of names by their census, doing the work for the service of the house of the LORD, from twenty years old and upward.