신명기 30:9의 주석

'והותירך ה, He will grant you success beyond any success you have ever enjoyed previously.

כי ישוב ה' לשוש עליך לטוב כאשר שש על אבותיך, “when Hashem will return and rejoice over you for good as He rejoiced over your forefathers.” It is possible that this verse alludes to the time when the King will return with His bride (the Jewish people), i.e. an allusion to the time of the redemption. At that time He will provide you with all the benefits accompanying such a return to favor. Should you inquire when exactly all this would happen, the Torah adds: “when you will hearken to the voice of the Lord your G’d to observe, etc.” The Jewish people are always expected to make the first move towards reconciliation with G’d, i.e. observing His commandments. Immediately G’d notices this, He in turn will hasten the rapprochement. Our fortunes depend on our becoming penitents. All this has been expressed in unmistakable language by Malachi 3,7: “שובו אלי ואשובה אליכם, “return to Me and I will return to you.” The letter ה at the end of the word אשובה in that verse is a reference to the final letter in the tetragrammaton, the attribute which created the universe.

כאשר שש על אבותיך, ”as He used to take delight in your forefathers.” This is a reference to the generation who inherited the Holy Land. G-d is addressing the exiles at this point.

לטובה...הכתובה בספר התורה הזה, as He said when He said: והתהלכתי בתוככם והייתי לכם לאלוקים ואתם תהיו לי לעם, “I shall walk freely in your midst and will be your G’d and you will be My people” (Leviticus 26,12) This promise will be fulfilled when כאשר ה' ישוב לשוש עליך...לטוב כי תשמע, as He had once delighted in your forefathers (the patriarchs). This time the good you will experience at G’d’s hands will not be due to the merit of the patriarchs but will be due to the fact that your repentance is so wholehearted and unreserved. Due to your unreserved repentance your former demerits will be converted into merits, seeing that it was, after all, these demerits and what followed that have become the catalyst of your eventual return to G’d. You will enjoy G’d’s goodwill just as did the patriarchs.