Who is "Kol ha'Nish'ar"?
Rashi: Every Jew that stays in his place, for he lacked money and could not ascend.
Malbim: There were three reasons why people did not ascend. (a) His Nefesh is lowly, and is not elevated for this great matter. (b) He cannot afford the expense [to ascend]. (c) He cannot bring a Nedavah for Binyan ha'Mikdash.
What is the meaning of "Yenase'uhu"?
Rashi: I command people of his place to give gifts to him, and elevate him with silver and gold, property and animals so he can ascend to Yerushalayim, with the Nedavah that people of his place volunteered towards building the Bayis. Some Goyim donated for the Mikdas-h.
Ibn Ezra: Via giving to him gifts, they will elevate him, for an Oni is lowly.
Malbim: They should raise his Ru'ach (spirit), and also financially.
What is "Rechush"?
Malbim: [Metaltelim] worth money.
Why should they give animals?
Malbim: They are to ride on.
