What do we learn from "vi'Ydatem..."?
Malbim: You will have a clear knowledge that "Ani Hashem Elokeichem."
What do we learn from "Shochen b'Har Tziyon"?
Malbim: I am amidst Yisrael regarding My Shechinah, which is constantly in Tziyon.
What is the consequence of Yerushalayim's Kedushah?
Radak: It is like Hekdesh, which is forbidden to strangers.
Will strangers not pass through it at all?
Radak #1: They will not pass through to harm them, like they did until now.
Radak #2: Indeed, they will not, because it will have great Kedushah in the future, just like even a Yisrael may not enter the Heichal. So the entire city will be Kadosh, that other nations may not enter.
Malbim: Correct. Tziyon will be even more Kadosh - even Yisrael will not enter without need!