1)
What is "Mishmeres Ohel Mo'ed" referring to?
1.
Seforno: It is referring to within the hangings of the Ohel Mo'ed, incorporating the whole of the Chatzer, which the Levi'im are also obligated to guard ? from inside the hangings of the Chatzer.
2)
What are the implications of "ve'Zar Lo Yikrav Aleichem"? To whom is it referring?