To whom is "K'chu" referring?
Seforno: 'Appoint Gaba'im to take the donations from you'.
Why does the Torah write "Yevi'ehah eis T'rumas Hashem ... ", and not "Yavi"?
Ramban and Moshav Zekenim (citing the Rosh): Sometimes the Torah first mentions the object generally, and then describes it in detail. 1
Ramban (according to Kabalah): It means 'Bring it together with the Terumah Elyonah' (with reference to bringing the Shechinah down). 2
Seforno: It means 'Bring the voluntary Nedavah together with the obligatory half-Shekel per person'.
Ba'al ha'Turim: It implies that men who donated their wives ornaments, should only do so with their wives' consent.
Having already told them about the Mishkan in detail (in Terumah from Sh'mos 24:2) and in general terms (in Ki Sisa, from Sh'mos 31:7), why does Moshe now repeat all the aspects of the Mishkan (albeit in general terms) to the people?
Ramban and Moshav Zekenim: Now that the time to donate had arrived, he gave them a broad picture of all that was required, to prompt them to donate generously. 1
The Torah will repeat in detail what Betzalel and his team of workers performed (later, from Sh'mos 36:8), and one final time to record the successful completion of the mission and that Moshe blessed them - in Pikudei, from Sh'mos 39:13 (Ramban).
What are the connotations of the word "asher Tzivsh Hashem Leimor"?
Rashi: 'Which Hashem commanded me to say to you".
What are the connotations of "N'div Libo"?
Rashi: It means that, since his heart prompts him to volunteer, he is called a 'N'div Leiv'. 1
Moshav Zekenim: "N'div" describes the person. 2 "Leiv" refers to the intellect, and not the physical organ.
Seforno: It means that the people should give willingly - the Gaba'im should not go to thm to collect.
Why does the Torah need to write "K'chu me'Itchem"? From whom else could they take?
Moshav Zekenim: This teaches us that their donation must belong to them, and not be something that is stolen.
