Galus in itself is a punishment, why does the Torah add "u'va'Goyim ha'heim Lo Sargi'a ... "?
Targum Yonasan: Because it is speaking where Yisrael opt to worship the gods of their captors.
What is the meaning of "Lo Sargi'a"?
Rashi: It means 'You will have no respite. 1
Rashi: As in Yeshayah, 28:12.
How will we reconcile this Pasuk "u'va'Goyim ha'heim Lo Sargi'a ... " with the Pasuk in Yirmiyah, 31:1 "Haloch Lehargi'o Yisrael"?
Makos, 24a: This is a case where the Navi Yirmiyah came and nullified the decree that Moshe made. 1
See Torah Temimah, note 47, who elaborates. In any event, this seems to support the opinion that Seifer Devarim was said by Moshe, and not by Hakadosh-Baruch-Hu, since how could Yirmiyah negate a Divine decree?
What is the definition of "Leiv Ragaz"?
Rashi: A terrified or trembling heart. 1
Rashi: As in Yeshayah, 14:9 and in Sh'mos, 15:14.
Why does the Torah insert the (otherwise superfluous) word "Venasan Hashem l'cha Sham Leiv Ragaz"?
Nedarim, 22a: To preclude Eretz Yisrael, where 'Leiv Ragaz' will not occur. 1
See Torah Temimah, note 48.
What is the meaning of "Da'avon Nefesh"?
Rashi (in Yirmiyah, 15:9) citing Targum Yonasan) and Targum Onkelos; It means 'distress'. 1
Nedarim, 22a: It refers to abdomanal troubles (piles) - the result of an angry heart - which cause 'Kilyon Einayim and Da'avon Nefesh'. 2
