Numbers 3:9-11

New American Standard Bible

⁹ So you shall ^(A)assign the Levites to Aaron and to his sons; they are exclusively assigned to him from the sons of Israel. ¹⁰ So you shall appoint Aaron and his sons that ^(B)they may ^[a]keep their priesthood, but ^(C)the ^[b]layman who comes near shall be put to death.”

¹¹ Again the Lord spoke to Moses, saying,