What is the significance of the fact that the area that the Torah calls "Chatzer" included the Mishkan - the Kodesh and the Kodesh Kodashim?
Bava Basra, 67a: It teaches us that someone who sells a Chatzer automatically sells the houses, the pits, the trenches and the caves that it contains. 1
See Torah Temimah, note 17.
What are the implications of "Chamishim al Chamishim"?
Rashi and Rashbam: It implies that the Mishkan, which measured thirty Amos, should be located (within the hundred Amos mentioned in the previous Pasuk) in a way that there are fifty clear Amos in front of it and twenty Amos on each of its other three sides. 1
Hadar Zekenim: It hints that the area of the [Chatzer ha'Mishkan] should be one fiftieth of Har ha'Bayis, which was five hundred Amos by five hundred Amos. 2
Eruvin, 58a: It hints that when measuring the two thousand T'chum Shabbos, one should use a rope that measures fifty Amos. 3
Why does the Pasuk repeat the fact that the sockets were made of copper?
Rashi: Previously the Torah taught us that the sockets of the curtains were made of copper; now it is coming to incorporate the sockets of the screen.
The Torah states here that the curtains were only five Amos tall. According to those who maintain that the Mizbe'ach was ten Amos tall, Kohanim serving on the Mizbe'ach were plainly visible from the outside (which is lacking in modesty)?
Da'as Zekenim and Hadar Zekenim, (both citing the Riva): The Pasuk states here that the curtains in the east were five Amos taller than those in the north and south, which were fifteen Amos tall. Consequently, those in the east were twenty Amos tall. 1
Zevachim, 59b: That opinion holds that the curtains were 15 Amos tall. 2 The Torah means that they were five Amos above the height of the Mizbe'ach.
Hadar Zekeenim: You are forced to say that the [Masach] in front of the [Chatzer of the] Mishkan was twenty Amos tall, like the height of the opening of the Heichal. See Da'as Zekenim. And if so, you must say that the curtains on each side of the Masach were fifteen Amos tall. (What forces us to say so? The Heichal was taller than the Mishkan. And there it discusses the opening, and here it discusses the curtain! Zevachim 59b does not distinguish; it implies that all the curtains were five, or all were 15! And it is a big Chidush that curtains of different heights were hung from a common pole - refer to 27:10:1:2* - PF).
And so he explains Shemos 38:14 to say.
