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.
KJV:
For by the last words of David the Levites were numbered from twenty years old and above:
NASB:
For by the last words of David the sons of Levi were numbered from twenty years old and upward.
KJV:
Because their office was to wait on the sons of Aaron for the service of the house of the LORD, in the courts, and in the chambers, and in the purifying of all holy things, and the work of the service of the house of God;
NASB:
For their office is to assist the sons of Aaron with the service of the house of the LORD, in the courts and in the chambers and in the purifying of all holy things, even the work of the service of the house of God,
KJV:
And that they should keep the charge of the tabernacle of the congregation, and the charge of the holy place, and the charge of the sons of Aaron their brethren, in the service of the house of the LORD.
NASB:
Thus they are to keep charge of the tent of meeting, and charge of the holy place, and charge of the sons of Aaron their relatives, for the service of the house of the LORD.
KJV:
Now these are the divisions of the sons of Aaron. The sons of Aaron; Nadab, and Abihu, Eleazar, and Ithamar.
NASB:
Now the divisions of the descendants of Aaron were these: the sons of Aaron were Nadab, Abihu, Eleazar and Ithamar.