King James Version
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.New International Version
These were the descendants of Levi by their families-the heads of families as they were registered under their names and counted individually, that is, the workers twenty years old or more who served in the temple of the LORD.Catholic Public Domain Version
These are the sons of Levi, in their kindred and families, leaders in turns, and the number of each of the heads who were doing the works of the ministry of the house of the Lord, from twenty years of age and upward