Numbers 1:51

When you would depart, the Levites shall take down the tabernacle. When you are to make camp, they shall set it up. Any outsider who will approach it shall be killed

Other versions

King James Version

And when the tabernacle setteth forward, the Levites shall take it down: and when the tabernacle is to be pitched, the Levites shall set it up: and the stranger that cometh nigh shall be put to death.

English Standard Version

When the tabernacle is to set out, the Levites shall take it down, and when the tabernacle is to be pitched, the Levites shall set it up. And if any outsider comes near, he shall be put to death.

New International Version

Whenever the tabernacle is to move, the Levites are to take it down, and whenever the tabernacle is to be set up, the Levites shall do it. Anyone else who goes near it shall be put to death.