Let no others, out of curiosity, see the things that are in the Sanctuary before they are wrapped, otherwise they shall die.
Other versions
King James Version
But they shall not go in to see when the holy things are covered, lest they die.English Standard Version
but they shall not go in to look on the holy things even for a moment, lest they die."New International Version
But the Kohathites must not go in to look at the holy things, even for a moment, or they will die."