Numbers 4:17-19

New American Standard Bible

¹⁷ Then the Lord spoke to Moses and to Aaron, saying, ¹⁸ “Do not let the tribe of the families of the Kohathites be eliminated from among the Levites. 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;