1)
What exactly, does "Yoridu oso ha'Levi'im" entail?
1.
Rashi: It entails taking down the Mishkan and carrying it to its next destination. 1
1
See Sifsei Chachamim.
2)
Whom exactly, is the Torah sentencing to death?
1.
Rashi: The Torah is sentencing to death a Zar who helps erect the Mishkan, or take it down or carry it. 1
1
See Sifsei Chachamim.
3)
Which form of death will he receive?