Bear it Upon their shoulders. Afterward the priests themselves, being multiplied, carried these things, though the Levites were not excluded. They shall not touch Before they are covered.
Related Commentaries of Numbers 4:15
Numbers 4:15
15 And when Aaron and his sons have made an end of covering the sanctuary, and all the vessels of the sanctuary, as the camp is to set forward; after that, the sons of Kohath shall come to bear it: but they shall not touch any holy thing, lest they die. These things are the burden of the sons of Kohath in the tabernacle of the congregation.