Numbers 1:51

יורידו אתו [AND WHEN THE DWELLING SETTETH FORWARD] THE LEVITES SHALL TAKE IT DOWN — Understand יורידו as the Targum does: they shall take it apart. Whenever they were about to set out on a journey in the wilderness from one station to another (cf. Rashi Exodus 40:38) they took the structure apart (lit., they took it apart from its state of being put up) and carried it to the place where the cloud afterwards abode, and there they encamped and erected it (the Tabernacle). והזר הקרב AND THE LAYMAN THAT COMETH NIGH to this service of theirs, יומת SHALL BE PUT TO DEATH by heaven (not by sentence of the court) (cf. Sanhedrin 84a).

וּבִנְסֹ֣עַ הַמִּשְׁכָּ֗ן יוֹרִ֤ידוּ אֹתוֹ֙ הַלְוִיִּ֔ם וּבַחֲנֹת֙ הַמִּשְׁכָּ֔ן יָקִ֥ימוּ אֹת֖וֹ הַלְוִיִּ֑ם וְהַזָּ֥ר הַקָּרֵ֖ב יוּמָֽת׃

And when the tabernacle sets 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 comes near shall be put to death.