Difference between revisions of "Blessings and Curses – Over Which Commandments/2"

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<li>Ralbag maintains that "מִשְׁפָּטִים" refers to the commandments of Parashat Mishpatim, while "חֻקִּים" include the non-intuitive laws of Sefer Vayikra,<fn>Ralbag appears to understand the term in a manner similar to Rashi above, claiming that "חֻקִּים" refers to commandments which demand an action which a person, through his intellect alone, would not have concluded was necessary.</fn> such as the laws of holidays, purity, and Shemittah. "הַתּוֹרֹת" are the ritual procedures of Sefer Vayikra, such as the laws of sacrifices which are prefaced by the terms, "תּוֹרַת הָעֹלָה" ,"תּוֹרַת הַמִּנְחָה" etc.&#160; As such, the terms refer to all the commandments given from Parashat Yitro through Parashat Behar.</li>
 
<li>Ralbag maintains that "מִשְׁפָּטִים" refers to the commandments of Parashat Mishpatim, while "חֻקִּים" include the non-intuitive laws of Sefer Vayikra,<fn>Ralbag appears to understand the term in a manner similar to Rashi above, claiming that "חֻקִּים" refers to commandments which demand an action which a person, through his intellect alone, would not have concluded was necessary.</fn> such as the laws of holidays, purity, and Shemittah. "הַתּוֹרֹת" are the ritual procedures of Sefer Vayikra, such as the laws of sacrifices which are prefaced by the terms, "תּוֹרַת הָעֹלָה" ,"תּוֹרַת הַמִּנְחָה" etc.&#160; As such, the terms refer to all the commandments given from Parashat Yitro through Parashat Behar.</li>
 
</ul></point>
 
</ul></point>
<point><b>"אֲשֶׁר נָתַן י"י... בְּהַר סִינַי"</b> According to this position, all of the commandments, with all details of their observance, were given at Sinai. Thus, this phrase does not come to exclude commandments that were given again elsewhere, but simply states that all of Torah was transmitted to Moshe at the mountain, and the rebuke refers to all of it.</point>
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<point><b>"אֲשֶׁר נָתַן י"י... בְּהַר סִינַי"</b><ul>
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<li>According to these sources, all of the commandments, with all details of their observance, were given at Sinai. Thus, this phrase does not come to exclude commandments that were given again elsewhere, but simply states that all of Torah was transmitted to Moshe at the mountain, and that the rebuke refers to all.</li>
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<li>Seforno and Ralbag could have alternatively explained that the verse is not limiting itself to laws given when Moshe ascended Mt. Sinai, but refers to all laws given in the vicinity of Mt. Sinai, both on the mountain and in Ohel Moed at its foot.</li>
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</ul></point>
 
<point><b>"מה עניין שמיטה אצל הר סיני"</b> – These sources need to explain why&#160;<a href="Vayikra25-1-4" data-aht="source">Vayikra 25:1</a> would specify that Hashem told Moshe about Shemittah at Sinai, if this is not unique, as everything else was taught there as well.&#160; Sifra, Rashi and Seforno<fn>Ralbag explains differently.&#160; Since the passage immediately preceding the laws of Shemittah dealt with the blasphemer and took place after Moshe's descent from the mountain, the Torah tells the reader that the Mitzvot of Shemittah were not given after this incident, but also while Moshe was on the mountain.</fn> answer that the verse teaches that not only did Hashem teach generalities at Sinai, but He also explained all the minutiae of every law at the same time.<fn>This is learned from Shemittah because it is mentioned in Shemot 23 in a general way, but elaborated upon in Vayikra 26, where it specifies that this elaboration took place at Sinai.</fn></point>
 
<point><b>"מה עניין שמיטה אצל הר סיני"</b> – These sources need to explain why&#160;<a href="Vayikra25-1-4" data-aht="source">Vayikra 25:1</a> would specify that Hashem told Moshe about Shemittah at Sinai, if this is not unique, as everything else was taught there as well.&#160; Sifra, Rashi and Seforno<fn>Ralbag explains differently.&#160; Since the passage immediately preceding the laws of Shemittah dealt with the blasphemer and took place after Moshe's descent from the mountain, the Torah tells the reader that the Mitzvot of Shemittah were not given after this incident, but also while Moshe was on the mountain.</fn> answer that the verse teaches that not only did Hashem teach generalities at Sinai, but He also explained all the minutiae of every law at the same time.<fn>This is learned from Shemittah because it is mentioned in Shemot 23 in a general way, but elaborated upon in Vayikra 26, where it specifies that this elaboration took place at Sinai.</fn></point>
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<point><b>Chronology of Sefer Vayikra</b> – This position has no difficulties with chronology since it asserts that all of the various commandments of the book were given at the same time, on Sinai, and that the phrase&#160; "אֲשֶׁר נָתַן י"י... בְּהַר סִינַי" is not a time marker.<fn>See above that it simply emphasizes that the curses are given over all mitzvot which were given to Moshe at Sinai.</fn>&#160; As such, it can assume that the book is written in order.</point>
 
<point><b>Content of Blessings/Curses</b> – Throughout the blessings/curses, Hashem does not specify individual commandments that need to be observed,<fn>The only two exceptions are allusions ot the nation's idolatry and explicit mention&#160; that lack of observance of the laws of Shemittah will lead to the future desolation of the land.&#160; See Rashbam below who notes the latter and concludes that all of the blessings/curses refer only to the laws of Shemittah and Yovel.</fn> but speaks in more general terms, saying "אִם בְּחֻקֹּתַי תֵּלֵכוּ וְאֶת מִצְוֺתַי תִּשְׁמְרוּ" and the like,<fn>See Vayikra 26:3 and 15.</fn> which might suggest that He is speaking about observance of everything.&#160; Similarly, the warning "לְבִלְתִּי עֲשׂוֹת אֶת <b>כׇּל</b> מִצְוֺתַי" could be brought as proof that that Hashem is referring of all of His commandments.</point>
 
<point><b>Content of Blessings/Curses</b> – Throughout the blessings/curses, Hashem does not specify individual commandments that need to be observed,<fn>The only two exceptions are allusions ot the nation's idolatry and explicit mention&#160; that lack of observance of the laws of Shemittah will lead to the future desolation of the land.&#160; See Rashbam below who notes the latter and concludes that all of the blessings/curses refer only to the laws of Shemittah and Yovel.</fn> but speaks in more general terms, saying "אִם בְּחֻקֹּתַי תֵּלֵכוּ וְאֶת מִצְוֺתַי תִּשְׁמְרוּ" and the like,<fn>See Vayikra 26:3 and 15.</fn> which might suggest that He is speaking about observance of everything.&#160; Similarly, the warning "לְבִלְתִּי עֲשׂוֹת אֶת <b>כׇּל</b> מִצְוֺתַי" could be brought as proof that that Hashem is referring of all of His commandments.</point>
 
<point><b>Why bless and curse now?</b> Since at this point in the narrative, the nation is about to enter the Land,<fn>It is only due to the sin of the spies that entry is delayed for forty years.</fn> it is an appropriate time to motivate the nation to keep the commandments.</point>
 
<point><b>Why bless and curse now?</b> Since at this point in the narrative, the nation is about to enter the Land,<fn>It is only due to the sin of the spies that entry is delayed for forty years.</fn> it is an appropriate time to motivate the nation to keep the commandments.</point>
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<li>For Ralbag and Seforno, the covenant in Devarim moved beyond that in Vayikra, as it included all the new commandments given in the intervening 38 years.&#160; According to them, each of the three ceremonies (Shemot 24, Vayikra 26 and Devarim 28) was based on the same premise, to warn the nation to observe all that had been commanded. They differed only in that each covered more laws than the previous one, since more had been relayed.</li>
 
<li>For Ralbag and Seforno, the covenant in Devarim moved beyond that in Vayikra, as it included all the new commandments given in the intervening 38 years.&#160; According to them, each of the three ceremonies (Shemot 24, Vayikra 26 and Devarim 28) was based on the same premise, to warn the nation to observe all that had been commanded. They differed only in that each covered more laws than the previous one, since more had been relayed.</li>
 
</ul></point>
 
</ul></point>
<point><b>Chronology of Sefer Vayikra</b> – This position has no difficulties with chronology since it asserts that all of the various commandments of the book were given at the same time, on Sinai, and that the phrase&#160; "אֲשֶׁר נָתַן י"י... בְּהַר סִינַי" is not a time marker.<fn>See above that it simply emphasizes that the curses are given over all mitzvot which were given to Moshe at Sinai.</fn>&#160; As such, it can assume that the book is written in order.</point>
 
 
</category>
 
</category>
 
<category>Laws of Shemittah and Yovel
 
<category>Laws of Shemittah and Yovel
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<point><b>Points of contact</b> – There are many points of contact between the blessings/curses and the specific commandments related to Shemittah and Yovel:<br/>
 
<point><b>Points of contact</b> – There are many points of contact between the blessings/curses and the specific commandments related to Shemittah and Yovel:<br/>
 
<ul>
 
<ul>
<li><b>Explicit mention of "שביתת הארץ"</b>&#160;– Besides allusions to idolatry, the only commandment that is specifically identified in Chapter 26 as leading to calamity for non-observance is that of letting the land rest.&#160; The root "שבת" appears numerous times in both chapters<fn>In Chapter 26: 34-35 the word comes up six times in relation to letting the land rest, and the same root is used once to connote settlement on the land:&#160; אָז תִּרְצֶה הָאָרֶץ אֶת <b>שַׁבְּתֹתֶיהָ</b> כֹּל יְמֵי הׇשַּׁמָּה וְאַתֶּם בְּאֶרֶץ אֹיְבֵיכֶם אָז <b>תִּשְׁבַּת</b> הָאָרֶץ וְהִרְצָת אֶת <b>שַׁבְּתֹתֶיהָ</b>.&#160; כׇּל יְמֵי הׇשַּׁמָּה <b>תִּשְׁבֹּת</b> אֵת אֲשֶׁר לֹא <b>שָׁבְתָה בְּשַׁבְּתֹתֵיכֶם בְּשִׁבְתְּכֶם</b> עָלֶיהָ <br/> In verse 43, as well, the root appears in the same context, "וְהָאָרֶץ תֵּעָזֵב מֵהֶם וְתִרֶץ אֶת <b>שַׁבְּתֹתֶיהָ</b> בׇּהְשַׁמָּה מֵהֶם".&#160; Not surprisingly, in Chapter 25 as well, the root appears throughout the opening verses which speak of the mitzvah of Shemittah.&#160;</fn>, reinforcing the connection.<fn>See R"E Samet,&#160;<a href="http://etzion.org.il/he/%D7%A4%D7%A8%D7%A9%D7%99%D7%95%D7%AA-%D7%91%D7%94%D7%A8-%D7%91%D7%97%D7%95%D7%A7%D7%95%D7%AA%D7%99-%D7%A1%D7%99%D7%95%D7%9D-%D7%9E%D7%A8%D7%95%D7%9E%D7%9D-%D7%9C%D7%A1%D7%A4%D7%A8-%D7%95%D7%99%D7%A7%D7%A8%D7%90">"פרשיות בהר-בחוקותי - סיום מרומם לספר ויקרא"</a> who makes this point.</fn>&#160;</li>
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<li><b>Explicit mention of "שביתת הארץ"</b>&#160;– Besides allusions to idolatry, the only commandment that is specifically identified in Chapter 26 as leading to calamity for non-observance is that of letting the land rest.&#160; The root "שבת" appears numerous times in both chapters,<fn>In Chapter 26: 34-35 the word comes up six times in relation to letting the land rest, and the same root is used once to connote settlement on the land:&#160; אָז תִּרְצֶה הָאָרֶץ אֶת <b>שַׁבְּתֹתֶיהָ</b> כֹּל יְמֵי הׇשַּׁמָּה וְאַתֶּם בְּאֶרֶץ אֹיְבֵיכֶם אָז <b>תִּשְׁבַּת</b> הָאָרֶץ וְהִרְצָת אֶת <b>שַׁבְּתֹתֶיהָ</b>.&#160; כׇּל יְמֵי הׇשַּׁמָּה <b>תִּשְׁבֹּת</b> אֵת אֲשֶׁר לֹא <b>שָׁבְתָה בְּשַׁבְּתֹתֵיכֶם בְּשִׁבְתְּכֶם</b> עָלֶיהָ <br/> In verse 43, as well, the root appears in the same context, "וְהָאָרֶץ תֵּעָזֵב מֵהֶם וְתִרֶץ אֶת <b>שַׁבְּתֹתֶיהָ</b> בׇּהְשַׁמָּה מֵהֶם".&#160; Not surprisingly, in Chapter 25 as well, the root appears throughout the opening verses which speak of the mitzvah of Shemittah.</fn> reinforcing the connection.<fn>undefined</fn>&#160;</li>
 
<li><b>Emphasis on the number 7</b> – Throughout the rebuke there is an emphasis on a "seven-fold" punishment.<fn>See Vayikra 26:18, 21, 24 and 28, where variations of the phrase "וְיִסַּרְתִּי אֶתְכֶם אַף אָנִי <b>שֶׁבַע</b> עַל חַטֹּאתֵיכֶם" occur.&#160; See R"Y Grossman above who notes this point.</fn>&#160; This might be taken as an allusion to the seven year cycle of Shemittah, and hint to a measure for measure punishment for not observing the holiness of the seventh year.</li>
 
<li><b>Emphasis on the number 7</b> – Throughout the rebuke there is an emphasis on a "seven-fold" punishment.<fn>See Vayikra 26:18, 21, 24 and 28, where variations of the phrase "וְיִסַּרְתִּי אֶתְכֶם אַף אָנִי <b>שֶׁבַע</b> עַל חַטֹּאתֵיכֶם" occur.&#160; See R"Y Grossman above who notes this point.</fn>&#160; This might be taken as an allusion to the seven year cycle of Shemittah, and hint to a measure for measure punishment for not observing the holiness of the seventh year.</li>
 
</ul>
 
</ul>
 
<ul>
 
<ul>
<li><b>Linguistic parallels</b> – In the description of the blessing of Chapter 26 there are several linguistic allusions to Chapter 25's promises of prosperity to those who keep the Sabbatical year:<fn>See R"E Samet above and R"Y Grossman,&#160;<a href="http://vbm.etzion.org.il/he/%D7%A4%D7%A8%D7%A9%D7%99%D7%95%D7%AA-%D7%91%D7%94%D7%A8-%D7%91%D7%97%D7%95%D7%A7%D7%95%D7%AA%D7%99-%D7%A0%D7%A1%D7%A4%D7%97-%D7%90%D7%97%D7%A8%D7%95%D7%9F-%D7%9C%D7%9E%D7%A2%D7%9E%D7%93-%D7%94%D7%A8-%D7%A1%D7%99%D7%A0%D7%99">"פרשיות בהר-בחוקותי - 'נספח אחרון' למעמד הר סיני "</a> who both note&#160; these parallels.</fn></li>
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<li><b>Linguistic parallels</b> – In the description of the blessing of Chapter 26 there are several linguistic allusions to Chapter 25's promises of prosperity to those who keep the Sabbatical year:<fn>See E. Emanuel, "שבת הארץ כביטוי לרצון ה' בבריאה", Megadim 23 (1995): 36, who notes these parallels.</fn></li>
 
</ul>
 
</ul>
 
<multilang style="overflow: auto;">
 
<multilang style="overflow: auto;">
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</table>
 
</table>
 
</multilang></point>
 
</multilang></point>
<point><b>What are Shemittah and Yovel singled out?</b> According to this position, Shemittah and Yovel are two of the most fundamental commandments.<fn>See&#160;<multilink><a href="SefornoBereshitIntroduction" data-aht="source">Seforno</a><a href="SefornoBereshitIntroduction" data-aht="source">Bereshit Introduction</a><a href="R. Ovadyah Seforno" data-aht="parshan">About R. Ovadyah Seforno</a></multilink> in his introduction to the Torah, who asserts that the observance of these specific laws will merit the inheritance of the land.</fn> They require and instill a tremendous amount of faith in Hashem and simultaneously serve a very important interpersonal role.&#160; As such, they merit blessings/ curses for their observance</point>
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<point><b>Why are Shemittah and Yovel singled out?</b> According to this position, Shemittah and Yovel are two of the most fundamental commandments.<fn>See&#160;<multilink><a href="SefornoBereshitIntroduction" data-aht="source">Seforno</a><a href="SefornoBereshitIntroduction" data-aht="source">Bereshit Introduction</a><a href="R. Ovadyah Seforno" data-aht="parshan">About R. Ovadyah Seforno</a></multilink> in his introduction to the Torah, who asserts that the observance of these specific laws will merit the inheritance of the land.</fn> They require and instill a tremendous amount of faith in Hashem and simultaneously serve a very important interpersonal role.&#160; As such, they merit blessings/ curses for their observance.&#160; For elaboration on the significance of the commandment see&#160;<a href="Purpose of Shemittah" data-aht="page">Purpose of Shemittah.</a></point>
<point><b>"אֵלֶּה הַחֻקִּים וְהַמִּשְׁפָּטִים וְהַתּוֹרֹת"</b> – According to Rashbam, the words "הַחֻקִּים וְהַמִּשְׁפָּטִים" in this conclusion can parallel their usage in&#160;<a href="Vayikra25-18" data-aht="source">Vayikra 25:18</a> and <a href="Vayikra26" data-aht="source">26:3</a> where they also refer to the laws of Shemittah and Yovel.&#160; He could suggest that "חֻקִּים" refer to the laws of Shemittah/Yovel that concern man and God, while "הַמִּשְׁפָּטִים" refer to the interpersonal ones,<fn>See R. D"Z Hoffmann who differentiates between the terms in this manner in this comments to Vayikra 18:4.</fn> such as the buying and selling of land and slaves.&#160; The term, "הַתּוֹרֹת", however presents a significant difficulty for this position as none of the laws of Vayikra 25 can easily be referred to as a "תורה."</point>
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<point><b>"אֵלֶּה הַחֻקִּים וְהַמִּשְׁפָּטִים וְהַתּוֹרֹת"</b> – According to Rashbam, the words "הַחֻקִּים וְהַמִּשְׁפָּטִים" in this conclusion can parallel their usage in&#160;<a href="Vayikra25-18" data-aht="source">Vayikra 25:18</a> and <a href="Vayikra26" data-aht="source">26:3</a> where they also refer to the laws of Shemittah and Yovel.&#160; He could suggest that "חֻקִּים" refer to the laws of Shemittah/Yovel that concern man and God, while "הַמִּשְׁפָּטִים" refer to the interpersonal laws, such as the prohibition against deception and the laws regarding buying and selling of land and slaves.<fn>See Ramban and Seforno on Vayikra 25:18 who apply the terms in this manner and R. D"Z Hoffmann on Vayikra 18:4 who defines the terms "חק" and "משפט" as laws between man and God or man and man.</fn>&#160;&#160; The term, "הַתּוֹרֹת", however presents a significant difficulty for this position as none of the laws of Vayikra 25 can easily be referred to as a "תורה."</point>
<point><b>"מה עניין שמיטה אצל הר סיני"</b> – According to Rashbam, the introduction "וַיְדַבֵּר י"י אֶל מֹשֶׁה בְּהַר סִינַי" simply comes to teach where the laws of Shemittah were given.<fn>It is similar to many other cases where the Torah relays the locale where commandments are given.&#160; See <multilink><a href="RashbamShemot12-1" data-aht="source">Rashbam</a><a href="RashbamShemot12-1" data-aht="source">Shemot 12:1</a><a href="RashbamBemidbar1-1" data-aht="source">Bemidbar 1:1</a><a href="RashbamBemidbar3-1" data-aht="source">Bemidbar 3:1</a><a href="R. Shemuel b. Meir (Rashbam)" data-aht="parshan">About R. Shemuel b. Meir</a></multilink> on Shemot 12:1, Bemidbar 1:1 and Bemidbar 3:1 where he consistently explains</fn>&#160; Rashbam maintains that the Torah is sharing that, in contrast to other laws of Sefer Vayikra, was not given in Ohel Moed, but previously, on Mt. Sinai.&#160; As such, the unit of Chapters 25-26 is out of place.</point>
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<point><b>"?מה עניין שמיטה אצל הר סיני"</b> – According to Rashbam, the introduction "וַיְדַבֵּר י"י אֶל מֹשֶׁה בְּהַר סִינַי" simply comes to teach where the laws of Shemittah were given.<fn>It is similar to many other cases where the Torah relays the locale where commandments are given.&#160; See <multilink><a href="RashbamShemot12-1" data-aht="source">Rashbam</a><a href="RashbamShemot12-1" data-aht="source">Shemot 12:1</a><a href="RashbamBemidbar1-1" data-aht="source">Bemidbar 1:1</a><a href="RashbamBemidbar3-1" data-aht="source">Bemidbar 3:1</a><a href="R. Shemuel b. Meir (Rashbam)" data-aht="parshan">About R. Shemuel b. Meir</a></multilink> on Shemot 12:1, Bemidbar 1:1 and Bemidbar 3:1 where he consistently points out that Hashem marks the location in which all legal sections of Torah were commanded.</fn>&#160; Rashbam maintains that the Torah is sharing that, in contrast to other laws of Sefer Vayikra, was not given in Ohel Moed, but previously, on Mt. Sinai.&#160; As such, the unit of Chapters 25-26 is out of place.</point>
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<point><b>Why are these mitzvot mentioned here?</b></point>
 
</category>
 
</category>
 
<category>Only the Laws Given on Mt. Sinai
 
<category>Only the Laws Given on Mt. Sinai

Version as of 10:36, 26 May 2016

Blessings and Curses

Exegetical Approaches

This topic has not yet undergone editorial review

All of Torah

The blessings and curses relate to observance of all of Hashem's mitzvot.

What about commandments not yet transmitted? These sources disagree regarding whether the blessings/curses were given even on commandments that were not yet relayed to the Children of Israel, or only on those that the nation had already received: 
  • Everything – Sifra and Rashi assert that the covenant covered the entire Written and Oral Torah.
  • Through Vayikra 25 – Ralbag and Seforno, in contrast, maintain that the blessings and curses only refer to the laws already relayed, everything from Parashat Yitro through Vayikra 25.
"אֵלֶּה הַחֻקִּים וְהַמִּשְׁפָּטִים וְהַתּוֹרֹת" – These sources differ in the way they understand these terms, consistent with their disagreement regarding how inclusive the covenant was:
  • Sifra and Rashi  explain that the plural form of the word "הַתּוֹרֹת" refers to both the Written and Oral Torah, while "הַחֻקִּים וְהַמִּשְׁפָּטִים" refer to various types of commandments.1  Together they comprise the entire body of Law.  It is not clear, however, why all three terms were needed, if the word "הַתּוֹרֹת" subsumes the others.
  • Ralbag maintains that "מִשְׁפָּטִים" refers to the commandments of Parashat Mishpatim, while "חֻקִּים" include the non-intuitive laws of Sefer Vayikra,2 such as the laws of holidays, purity, and Shemittah. "הַתּוֹרֹת" are the ritual procedures of Sefer Vayikra, such as the laws of sacrifices which are prefaced by the terms, "תּוֹרַת הָעֹלָה" ,"תּוֹרַת הַמִּנְחָה" etc.  As such, the terms refer to all the commandments given from Parashat Yitro through Parashat Behar.
"אֲשֶׁר נָתַן י"י... בְּהַר סִינַי"
  • According to these sources, all of the commandments, with all details of their observance, were given at Sinai. Thus, this phrase does not come to exclude commandments that were given again elsewhere, but simply states that all of Torah was transmitted to Moshe at the mountain, and that the rebuke refers to all.
  • Seforno and Ralbag could have alternatively explained that the verse is not limiting itself to laws given when Moshe ascended Mt. Sinai, but refers to all laws given in the vicinity of Mt. Sinai, both on the mountain and in Ohel Moed at its foot.
"מה עניין שמיטה אצל הר סיני" – These sources need to explain why Vayikra 25:1 would specify that Hashem told Moshe about Shemittah at Sinai, if this is not unique, as everything else was taught there as well.  Sifra, Rashi and Seforno3 answer that the verse teaches that not only did Hashem teach generalities at Sinai, but He also explained all the minutiae of every law at the same time.4
Chronology of Sefer Vayikra – This position has no difficulties with chronology since it asserts that all of the various commandments of the book were given at the same time, on Sinai, and that the phrase  "אֲשֶׁר נָתַן י"י... בְּהַר סִינַי" is not a time marker.5  As such, it can assume that the book is written in order.
Content of Blessings/Curses – Throughout the blessings/curses, Hashem does not specify individual commandments that need to be observed,6 but speaks in more general terms, saying "אִם בְּחֻקֹּתַי תֵּלֵכוּ וְאֶת מִצְוֺתַי תִּשְׁמְרוּ" and the like,7 which might suggest that He is speaking about observance of everything.  Similarly, the warning "לְבִלְתִּי עֲשׂוֹת אֶת כׇּל מִצְוֺתַי" could be brought as proof that that Hashem is referring of all of His commandments.
Why bless and curse now? Since at this point in the narrative, the nation is about to enter the Land,8 it is an appropriate time to motivate the nation to keep the commandments.
Why include all mitzvot? It is natural to make a covenant on all of Hashem's laws, as all commandments would seem to equally require warning of punishment/reward.
Relationship to Covenant of Shemot 24 – According to these sources, the two ceremonies9 are totally distinct:
  • Rashi asserts that the covenant of Shemot 24 took place before Matan Torah,10 and only referred to the seven Noachide laws and the handful of commandments that the people had received at Marah.11  It is first in Vayikra that a covenant is made over the complete Torah. 
  • According to Ralbag and Seforno, in contrast, the covenant of Shemot 24 was made over the laws of Shemot 20-23 (Parshat Yitro and Mishpatim).12  Vayikra's ceremony took the nation a step further, warning them to observe not only these, but all the laws given since then as well.
Comparison to ceremony in Devarim
  • Rashi views this ceremony as being exactly parallel to that in Devarim 28-29, as both were all inclusive and made over all of the commandments.13 According to him, each time the nation found itself on the eve of entry into the land, Hashem made a covenant over all of Torah to motivate observance.
  • For Ralbag and Seforno, the covenant in Devarim moved beyond that in Vayikra, as it included all the new commandments given in the intervening 38 years.  According to them, each of the three ceremonies (Shemot 24, Vayikra 26 and Devarim 28) was based on the same premise, to warn the nation to observe all that had been commanded. They differed only in that each covered more laws than the previous one, since more had been relayed.

Laws of Shemittah and Yovel

The blessings and curses relate only to the laws of Shemittah and Yovel mentioned in Vayikra 25.

Context – As the blessings and curses immediately follow the laws of Shemittah and Yovel, it is logical to link the two.  Rashbam points out that Vayikra 25:1 ("וַיְדַבֵּר י"י אֶל מֹשֶׁה בְּהַר סִינַי ") and 26:46 ("אֲשֶׁר נָתַן י"י...בְּהַר סִינַי") serve as bookends that bracket the unit.
Points of contact – There are many points of contact between the blessings/curses and the specific commandments related to Shemittah and Yovel:
  • Explicit mention of "שביתת הארץ" – Besides allusions to idolatry, the only commandment that is specifically identified in Chapter 26 as leading to calamity for non-observance is that of letting the land rest.  The root "שבת" appears numerous times in both chapters,14 reinforcing the connection.15 
  • Emphasis on the number 7 – Throughout the rebuke there is an emphasis on a "seven-fold" punishment.16  This might be taken as an allusion to the seven year cycle of Shemittah, and hint to a measure for measure punishment for not observing the holiness of the seventh year.
  • Linguistic parallels – In the description of the blessing of Chapter 26 there are several linguistic allusions to Chapter 25's promises of prosperity to those who keep the Sabbatical year:17
EN/HEע/E
(כה:יח) וַעֲשִׂיתֶם אֶת חֻקֹּתַי וְאֶת מִשְׁפָּטַי תִּשְׁמְרוּ וַעֲשִׂיתֶם אֹתָם (כו:ג) אִם בְּחֻקֹּתַי תֵּלֵכוּ וְאֶת מִצְוֺתַי תִּשְׁמְרוּ וַעֲשִׂיתֶם אֹתָם
(כה:יח) וִישַׁבְתֶּם עַל הָאָרֶץ לָבֶטַח (כו:ה) וִישַׁבְתֶּם לָבֶטַח בְּאַרְצְכֶם.
(כה:יט) וְנָתְנָה הָאָרֶץ פִּרְיָהּ וַאֲכַלְתֶּם לָשֹׂבַע (כו:ד-ה) וְנָתְנָה הָאָרֶץ יְבוּלָהּ... וַאֲכַלְתֶּם לַחְמְכֶם לָשֹׂבַע
(כה:כב) וַאֲכַלְתֶּם מִן הַתְּבוּאָה יָשָׁן (כו:י) וַאֲכַלְתֶּם יָשָׁן נוֹשָׁן
(כה:לח) אֲנִי י"י אֱלֹהֵיכֶם אֲשֶׁר הוֹצֵאתִי אֶתְכֶם מֵאֶרֶץ מִצְרָיִם (כו:יג) אֲנִי י"י אֱלֹהֵיכֶם אֲשֶׁר הוֹצֵאתִי אֶתְכֶם מֵאֶרֶץ מִצְרַיִם
Why are Shemittah and Yovel singled out? According to this position, Shemittah and Yovel are two of the most fundamental commandments.18 They require and instill a tremendous amount of faith in Hashem and simultaneously serve a very important interpersonal role.  As such, they merit blessings/ curses for their observance.  For elaboration on the significance of the commandment see Purpose of Shemittah.
"אֵלֶּה הַחֻקִּים וְהַמִּשְׁפָּטִים וְהַתּוֹרֹת" – According to Rashbam, the words "הַחֻקִּים וְהַמִּשְׁפָּטִים" in this conclusion can parallel their usage in Vayikra 25:18 and 26:3 where they also refer to the laws of Shemittah and Yovel.  He could suggest that "חֻקִּים" refer to the laws of Shemittah/Yovel that concern man and God, while "הַמִּשְׁפָּטִים" refer to the interpersonal laws, such as the prohibition against deception and the laws regarding buying and selling of land and slaves.19   The term, "הַתּוֹרֹת", however presents a significant difficulty for this position as none of the laws of Vayikra 25 can easily be referred to as a "תורה."
"?מה עניין שמיטה אצל הר סיני" – According to Rashbam, the introduction "וַיְדַבֵּר י"י אֶל מֹשֶׁה בְּהַר סִינַי" simply comes to teach where the laws of Shemittah were given.20  Rashbam maintains that the Torah is sharing that, in contrast to other laws of Sefer Vayikra, was not given in Ohel Moed, but previously, on Mt. Sinai.  As such, the unit of Chapters 25-26 is out of place.
Why are these mitzvot mentioned here?

Only the Laws Given on Mt. Sinai

The warnings refer to all of the laws that are explicitly mentioned as being given at Mt. Sinai, including those commandments found in Parashat Yitro, Mishpatim and Behar.