And these are the last words of David. David the son of Jesse said, and the man who was raised up on high, the anointed of the God of Jacob, and the sweet psalmist of Israel, said:
These were the sons of Levi after the house of their fathers, the chief of the fathers, as they were counted by number of names by their heads, the ones who did the work for the service of the house of Jehovah, from the age of twenty years and upward.
because their office was to wait on the sons of Aaron for the service of the house of Jehovah, 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
both to the genealogy of the priests by the house of their fathers, and the Levites from twenty years old and upward, and their charges by their divisions,