All those that were numbered of the Levites, whom Moses and Aaron and the chief of Israel numbered, after their families, and after the house of their fathers,
These be those that were numbered of the families of the sons of Merari, whom Moses and Aaron numbered according to the word of the Lord by the hand of Moses.
From thirty years old and upward even unto fifty years old, every one that came to do the service of the ministry, and the service of the burden in the tabernacle of the congregation,
