as well as the priests who were recorded genealogically according to their fathers’ households, and the Levites from twenty years old and upwards, by their responsibilities and their divisions.
These are the numbered men of the families of the sons of Merari, whom Moses and Aaron numbered according to the commandment of Yahweh by the hand of Moses.
from thirty years and upward even to fifty years old, everyone who could enter to perform the work of service and the service of carrying in the tent of meeting,