From thirty years old and upward until fifty years old shalt thou number them; all that enter in to perform the service, to do the work in the tabernacle of the congregation.
This is it that belongeth unto the Levites: from twenty and five years old and upward they shall go in to wait upon the service of the tabernacle of the congregation:
¶ 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.
Beside their genealogy of males, from three years old and upward, even unto every one that entereth into the house of the Lord, his daily portion for their service in their charges according to their courses;