Numbers 4:19-21

New American Standard Bible

¹⁹ Rather, do this for them so that they will live and ^(A)not die when they approach the most holy objects: Aaron and his sons shall go in and assign each of them to his work and to his load; ²⁰ but ^(B)they shall not come in to see the holy objects even for a moment, or they will die.”

Duties of the Gershonites

²¹ Then the Lord spoke to Moses, saying,