What is "Asar Di Davchin"?
Rashi: The place where they slaughter Korbanos.
What is the meaning of "v'Ushohi Mesovelin"?
Rashi: Its walls will be founded. This is like "v'Ushaya Yachitu" (4:12).
Ibn Ezra: Its foundations bear carried rocks.
Malbim: The walls will be strong to bear the building.
What is the meaning of "Rome Amin Shitin Pesaye Amin Shitin"?
Rashi: Its height will be 60 Amos, and its width will be 60 Amos.
Why did he specify the height and width, but not the length?
Ibn Ezra: The length was like Bayis Rishon; the height and width were more than in Bayis Rishon. Malbim - it was Hashgachah that he did not deviate from what was proper for Bayis Sheni. Had he deviated, they could not have built it, for "ha'Kol bi'Chsav mi'Yad Hashem Alai Hiskil 1 ."
That verse refers to Bayis Rishon, but Bayis Sheni had to be the same, unless a verse teaches to change (Zevachim 62a). Bayis Sheni was 100 Amos tall and 70 wide (Midos 4:6-7)! Malbim (Daniel 11:31) says that Hordus rebuilt it (based on Bava ben Buta's counsel - Bava Basra 4a) bigger than it was. There was no Navi in his days to authorize this! Shitah Mekubetzes (Bava Basra 3b, citing Tosfos ha'Rosh) - "Gadol Yihyeh... ha'Bayis ha'Zeh... Min ha'Rishon" taught to make it taller. Perhaps this permits anything taller than Bayis Rishon, which was 30. However, how could they change the width? Indeed, it was 60 excluding the north and south walls (Midos 4:7). If the walls do not get the Kedushah of what is inside them, we can say that the interior must be 60. However, Chachamim were unsure whether the eastern wall of Dvir (Kodesh ha'Kodoshim) in Bayis Rishon received Kedushas Dvir (Yuma 51b)! This requires investigation. (PF)
