These were the sons of Levi by their ancestral houses, the heads of families as they were enrolled according to the number of the names of the individuals from twenty years old and upward who were to do the work for the service of the house of the Lord.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved. (New Revised Standard Bible Version Online)