But you shall set the Levites over the tabernacle of testimony, and over all its vessels, and over all its things. They shall carry the tabernacle and all its vessels. And they shall serve it, and shall camp around the tabernacle.
According to the command of Jehovah they were numbered by the hand of Moses, everyone according to his service and according to his burden. So they were numbered by him as Jehovah commanded Moses.