Numbers 4:19-21

Darby Translation

¹⁹ but this shall ye do unto them, that they may live, and not die, when they draw near unto the most holy things: Aaron and his sons shall go in, and appoint them every one to his service and to his burden;

²⁰ but they shall not go in and see for a moment the holy things, lest they die.

²¹ And Jehovah spoke to Moses, saying,