Difference between revisions of "Selection of the Priests and Levites/2"

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<point><b>"מִלְאוּ יֶדְכֶם הַיּוֹם לַי"י... לָתֵת עֲלֵיכֶם הַיּוֹם בְּרָכָה"</b> – R"Y Bekhor Shor is consistent in maintaining that the blessing spoken of here is unrelated to the tribe's appointment as Levites and Priests.&#160; He asserts, instead, that it refers to their being included in the blessings of Moshe before his death.&#160; Though they had not merited a blessing by Yaakov, this action warranted them one.</point>
 
<point><b>"מִלְאוּ יֶדְכֶם הַיּוֹם לַי"י... לָתֵת עֲלֵיכֶם הַיּוֹם בְּרָכָה"</b> – R"Y Bekhor Shor is consistent in maintaining that the blessing spoken of here is unrelated to the tribe's appointment as Levites and Priests.&#160; He asserts, instead, that it refers to their being included in the blessings of Moshe before his death.&#160; Though they had not merited a blessing by Yaakov, this action warranted them one.</point>
 
<point><b>Chronology of the Command to Build the Mishkan</b> – This approach is supported by the simple order of the verses, according to which Aharon is commanded regarding his role as Kohen before the Sin of the Golden Calf.<fn>R"Y Bekhor Shor himself suggests that the verses are achronological and that the command to build the Mishkan followed the sin of the Golden calf.&#160; This reading works with his alternative understanding of the choosing of the tribe of Levi as having occurred only in the aftermath of the sin.</fn>&#160; Though the Levites are not mentioned there, it is logical that they might have been chosen at the same time since it was the establishment of the Tabernacle that prompted a need for their service.</point>
 
<point><b>Chronology of the Command to Build the Mishkan</b> – This approach is supported by the simple order of the verses, according to which Aharon is commanded regarding his role as Kohen before the Sin of the Golden Calf.<fn>R"Y Bekhor Shor himself suggests that the verses are achronological and that the command to build the Mishkan followed the sin of the Golden calf.&#160; This reading works with his alternative understanding of the choosing of the tribe of Levi as having occurred only in the aftermath of the sin.</fn>&#160; Though the Levites are not mentioned there, it is logical that they might have been chosen at the same time since it was the establishment of the Tabernacle that prompted a need for their service.</point>
<point><b>The "כֹּהֲנִים" of Shemot 19</b> – According to R"Y Bekhor Shor these were the firstborns, since at this point, before the command to build the Mishkan, they, rather than members of the tribe of Levi, had the status of priests.</point>
+
<point><b>The "כֹּהֲנִים" of Shemot 19</b> – According to R"Y Bekhor Shor these were the firstborns, since at this point, before the command to build the Mishkan, they, rather than members of the tribe of Levi, had the status of priests.<fn>Cf. Ibn Ezra below who suggests that they are parallel to the "elders" of Shemot 24:1 who also refer to the firstborns.&#160; As such, Ibn Ezra maintains that both verses speak of the same event with the same cast of characters.</fn></point>
 
<point><b>"וַיִּשְׁלַח אֶת נַעֲרֵי בְּנֵי יִשְׂרָאֵל וַיַּעֲלוּ עֹלֹת "</b> – R"Y Bekhor Shor maintains that these "youth" who sacrifice also refer to the firstborns who still had priestly status at this point in the narrative.</point>
 
<point><b>"וַיִּשְׁלַח אֶת נַעֲרֵי בְּנֵי יִשְׂרָאֵל וַיַּעֲלוּ עֹלֹת "</b> – R"Y Bekhor Shor maintains that these "youth" who sacrifice also refer to the firstborns who still had priestly status at this point in the narrative.</point>
 
<point><b>"בָּעֵת הַהִוא הִבְדִּיל י"י אֶת שֵׁבֶט הַלֵּוִי"</b> – Though Hashem had chosen the tribe of Levi without any connection to their role the sin of the Calf, practically the Tabernacle was built after the sin and so "it was at that time" that the tribe was actively separated.</point>
 
<point><b>"בָּעֵת הַהִוא הִבְדִּיל י"י אֶת שֵׁבֶט הַלֵּוִי"</b> – Though Hashem had chosen the tribe of Levi without any connection to their role the sin of the Calf, practically the Tabernacle was built after the sin and so "it was at that time" that the tribe was actively separated.</point>
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<opinion>After the Priests
 
<opinion>After the Priests
 
<p>The choosing of the Levites was distinct from the sanctification of the Priests and only occurred after the Sin of the Golden Calf.</p>
 
<p>The choosing of the Levites was distinct from the sanctification of the Priests and only occurred after the Sin of the Golden Calf.</p>
<mekorot><multilink><a href="RambanBemidbar3-1" data-aht="source">Ramban</a><a href="RambanShemot24-5" data-aht="source">Shemot 24:5</a><a href="RambanShemot25-2" data-aht="source">Shemot 25:2</a><a href="RambanBemidbar3-1" data-aht="source">Bemidbar 3:1</a><a href="RambanBemidbar3-5" data-aht="source">Bemidbar 3:5</a><a href="RambanBemidbar16-19" data-aht="source">Bemidbar 16:19</a><a href="RambanDevarim10-8" data-aht="source">Devarim 10:8</a><a href="R. Moshe b. Nachman (Ramban, Nachmanides)" data-aht="parshan">About R. Moshe b. Nachman</a></multilink>, <multilink><a href="AbarbanelShemot28-1" data-aht="source">Abarbanel</a><a href="AbarbanelShemot19-22" data-aht="source">Shemot 19:22</a><a href="AbarbanelShemot28-1" data-aht="source">Shemot 28:1</a><a href="AbarbanelShemot32-29" data-aht="source">Shemot 32:29</a><a href="AbarbanelShemot35" data-aht="source">Shemot 35</a><a href="AbarbanelBemidbar3-11" data-aht="source">Bemidbar 3:11</a><a href="AbarbanelDevarim10" data-aht="source">Devarim 10</a><a href="R. Yitzchak Abarbanel" data-aht="parshan">About R. Yitzchak Abarbanel</a></multilink>,</mekorot>
+
<mekorot><multilink><a href="RambanBemidbar3-1" data-aht="source">Ramban</a><a href="RambanShemot24-5" data-aht="source">Shemot 24:5</a><a href="RambanShemot25-2" data-aht="source">Shemot 25</a><a href="RambanBemidbar3-1" data-aht="source">Bemidbar 3:1</a><a href="RambanBemidbar3-5" data-aht="source">Bemidbar 3:5</a><a href="RambanBemidbar16-19" data-aht="source">Bemidbar 16:19</a><a href="RambanDevarim10-8" data-aht="source">Devarim 10:8</a><a href="R. Moshe b. Nachman (Ramban, Nachmanides)" data-aht="parshan">About R. Moshe b. Nachman</a></multilink>, <multilink><a href="AbarbanelShemot28-1" data-aht="source">Abarbanel</a><a href="AbarbanelShemot19-22" data-aht="source">Shemot 19:22</a><a href="AbarbanelShemot28-1" data-aht="source">Shemot 28:1</a><a href="AbarbanelShemot32-29" data-aht="source">Shemot 32:29</a><a href="AbarbanelShemot35" data-aht="source">Shemot 35</a><a href="AbarbanelBemidbar3-11" data-aht="source">Bemidbar 3:11</a><a href="AbarbanelDevarim10" data-aht="source">Devarim 10</a><a href="R. Yitzchak Abarbanel" data-aht="parshan">About R. Yitzchak Abarbanel</a></multilink>,</mekorot>
 
<point><b>Chronology of the Command to Build the Mishkan</b> – This approach works with the simple chronology of the verses which presents Aharon as being designated prior to the Sin of the Golden Calf, when Hashem commanded to build the Mishkan, but only speaks of the consecration of the rest of the Levites after the story of the sin, in the second year.<fn>Ramban is consistent in understanding that the Torah is written chronologically.&#160; For more on his approach, see <a href="Commentators:R. Moshe b. Nachman (Ramban, Nachmanides)" data-aht="page">R. Moshe b. Nachman</a>.</fn></point>
 
<point><b>Chronology of the Command to Build the Mishkan</b> – This approach works with the simple chronology of the verses which presents Aharon as being designated prior to the Sin of the Golden Calf, when Hashem commanded to build the Mishkan, but only speaks of the consecration of the rest of the Levites after the story of the sin, in the second year.<fn>Ramban is consistent in understanding that the Torah is written chronologically.&#160; For more on his approach, see <a href="Commentators:R. Moshe b. Nachman (Ramban, Nachmanides)" data-aht="page">R. Moshe b. Nachman</a>.</fn></point>
<point><b>Why were Aharon and the Levites Chosen?</b> Abarbanel asserts that Aharon merited the priesthood because, after Moshe, no one else in Israel came close to his level of perfection and prophecy.&#160; The Levites, in contrast, were chosen due to the fact that they did not participate in the Sin of the Golden Calf, but rather defended the honor of Hashem.<fn>Ramban suggests that the Levites were not chosen immediately after their actions during the episode of the Golden Calf, but later in the second year when they were consecrated. This leaves open the possibility that their appointment was unrelated to the episode, and might have been due only to their connection to Moshe and Aharon.&#160; Alternatively, already during the episode of the Calf, Hashem decided to appoint the Levites but simply did not put His decision into effect until later.</fn></point>
+
<point><b>Why were Aharon and the Levites Chosen?</b> Abarbanel asserts that Aharon merited the priesthood because, after Moshe, no one else in Israel came close to his level of perfection and prophecy.&#160; The Levites, in contrast, were chosen due to the fact that they did not participate in the Sin of the Golden Calf, but rather defended the honor of Hashem.<fn>Ramban suggests that the Levites were not chosen immediately after their actions during the episode of the Golden Calf, but later in the second year when they were consecrated. This leaves open the possibility that their appointment was unrelated to the episode, and might have been due only to their connection to Moshe and Aharon.&#160; Alternatively, already during the episode of the Calf, Hashem decided to appoint the Levites but simply did not put His decision into effect until later.</fn> The two appointments, thus, were totally distinct and for different reasons.</point>
<point><b>Status of the Firstborn</b></point>
 
 
<point><b>Status of the Firstborn</b><ul>
 
<point><b>Status of the Firstborn</b><ul>
<li>Ramban suggests that until the Tabernacle was built every individual was allowed to sacrifice, and that the firstborns did not have any unique priestly status. It is possible, however, that he maintains that after they were sanctified during the Plague of Firstborns (until they were replaced) they did have Levite status.<fn>See, for example, his comments on Bemidbar 17:6, that the nation was upset during the rebellion of Korach because they wanted the firstborns to serve instead of the Levites: "אבל היו חפצים שיהיו הבכורות משרתי המשכן במקום הלוים ולא ירצו בחלופין שעשו בהם".</fn>&#160;&#160; It is unclear, however, what that would entail before the Tabernacle was built, when there was nothing to carry or guard.<fn>It is possible that the sanctification was only for the future, with the original intention being that they would serve as Levites in the Mishkan, but until its construction they did not have an active role.</fn></li>
+
<li><b>No priestly status</b> – Ramban<fn>Ramban also brings the opinion of Chazal that the firstborns were in charge of sacrificing, but says this in the name of the "rabbis" and then gives his own alternative "according to the simple sense."</fn> suggests that until the Tabernacle was built every individual was allowed to sacrifice, and that the firstborns did not have any unique priestly status. Nonetheless, he appears to maintain that after they were sanctified during the Plague of Firstborns they did have Levite status (which is why they are later replaced not by Aharon and sons, but by the Levites).<fn>See, for example, his comments on Bemidbar 17:6, that the nation was upset during the rebellion of Korach because they wanted the firstborns to serve instead of the Levites: "אבל היו חפצים שיהיו הבכורות משרתי המשכן במקום הלוים ולא ירצו בחלופין שעשו בהם".</fn>&#160; It is unclear, however, what that would entail before the Tabernacle was built, when there was nothing to carry or guard.<fn>It is possible that the sanctification was only for the future, with the original intention being that they would serve as Levites in the Mishkan, but until its construction they did not have an active role.</fn></li>
<li>&#160;Abarbanel, in contrast, appears to maintain that the firstborns were chosen to take on Levite status,<fn>Though Abarbanel is explicit that the firstborns were sanctified to serve Hashem after the Plague of the Firstborns, he is not clear regarding what role they took.&#160; However, since the firstborns are later replaced by the Levites and Aharon is chosen separately, it is most logical to assume that they were chosen to serve in the role later taken by the Levites.</fn> but that before Aharon was appointed they also played a role in sacrificing.</li>
+
<li><b>Partial priestly status</b> – Abarbanel might agree that in the long term, the firstborns were chosen to take on Levite (rather than priestly) roles,<fn>Though Abarbanel is explicit that the firstborns were sanctified to serve Hashem after the Plague of the Firstborns, he is not clear regarding what role they took.&#160; However, since the firstborns are later replaced by the Levites and Aharon is chosen separately, it is most logical to assume that they were chosen to serve in the role later taken by the Levites.</fn> but in contrast to Ramban, he suggests that before Aharon was appointed they might have also played a role in sacrificing.</li>
 
</ul></point>
 
</ul></point>
<point></point>
+
<point><b>Sin of the Golden Calf and Replacing of the Firstborns</b> – Abarbanel asserts that the firstborns were rejected for having sinned by the Golden Calf, while the Levites, who did not sin, were rewarded by taking over their previous position.</point>
 +
<point><b>"מִלְאוּ יֶדְכֶם הַיּוֹם לַי"י... לָתֵת עֲלֵיכֶם הַיּוֹם בְּרָכָה"</b> – This position could suggest, like Rashi below, that in the words "מִלְאוּ יֶדְכֶם הַיּוֹם לַי"י" Moshe dedicated the Levites to Hashem, and gave them the blessing of elevated status.</point>
 +
<point><b>"בָּעֵת הַהִוא הִבְדִּיל י"י אֶת שֵׁבֶט הַלֵּוִי"</b> – As this verse seems to suggest that both the Levites and Priests<fn>It speaks of being chosen to carry the Ark, a function of the Levites, and blessing the nation, a task of the Priests.</fn> were chosen in the aftermath of the Sin of the Golden Calf, it is difficult for the position. Ramban explains that the phrase "בָּעֵת הַהִוא" refers not to the zealous actions of the Levites, but to the later period when Moshe attained forgiveness for Aharon and the nation. As such, Moshe is saying that at that time, Hashem reaffirmed his choosing of Aharon as Kohen, which had been temporarily nullified due to the sin.<fn>Ramban is also bothered by the fact that the verse suggests that the Levites were chosen soon after the sin, even though they are only consecrated in the second year.&#160; He offers two possibilities to deal with the problem.&#160; His first reading suggests that the verse might be saying that with the atonement, Hashem reaffirmed Aharon's position, and simultaneously chose the Levites, though He did not act upon this decision until the second year.&#160; Alternatively, the verse might be speaking only of the reaffirmation of Aharon's position, and not of the choosing of the Levites at all.&#160; According to this, when the verse says that Hashem "separated the Tribe of Levi" it means that Hashem separated Aharon from the tribe of Levi. In addition, the mention of the task oarrying the Ark is understood to be one of Aharon jobs since priests, too, were allowed to carry it.</fn></point>
 +
<point><b>The "כֹּהֲנִים" of Shemot 19</b> – Abarbanel posits that these could refer either to the firstborns, who, in his opinion, still had this role, or to Nadav and Avihu who are so called after their future position.</point>
 +
<point><b>"וַיִּשְׁלַח אֶת נַעֲרֵי בְּנֵי יִשְׂרָאֵל וַיַּעֲלוּ עֹלֹת "</b> – Ramban maintains that these נערים refer to innocent youths, who had never yet touched a female and in their holiness were chosen to bring these sacrifices.&#160; This is consistent with his opinion that before the Tabernacles' construction, everyone was allowed to bring individual sacrifices.</point>
 +
<point><b>"הֲנִגְלֹה נִגְלֵיתִי אֶל בֵּית אָבִיךָ...לִי לְכֹהֵן"</b> – This approach might posit that the verse is not speaking of just one evnt that happened in Egypt, but a prophecy which was given in egypt and the choosing of the priests which took place later.</point>
 +
<point><b>Rebellion of Korach</b></point>
 
</opinion>
 
</opinion>
 
</category>
 
</category>
 
<category>In the Aftermath of the Sin of the Golden Calf
 
<category>In the Aftermath of the Sin of the Golden Calf
 
<p>After the nation sinned at the Golden Calf, the tribe of Levi was picked for both the priesthood and Levite positions.</p>
 
<p>After the nation sinned at the Golden Calf, the tribe of Levi was picked for both the priesthood and Levite positions.</p>
<mekorot><multilink><a href="RYehudaibnBalaamBemidbar3-11" data-aht="source">R. Yehuda ibn Balaam</a><a href="RYehudaibnBalaamBemidbar3-11" data-aht="source">Bemidbar 3:11</a><a href="R. Yehuda ibn Balaam" data-aht="parshan">About R. Yehuda ibn Balaam</a></multilink>, <multilink><a href="RashiDevarim10-8" data-aht="source">Rashi</a><a href="RashiBereshit25-31" data-aht="source">Bereshit 25:31</a><a href="RashiShemot19-22" data-aht="source">Shemot 19:22</a><a href="RashiShemot28-41" data-aht="source">Shemot 28:41</a><a href="RashiShemot31-18" data-aht="source">Shemot 31:18</a><a href="RashiShemot32-29" data-aht="source">Shemot 32:29</a><a href="RashiBemidbar3-12" data-aht="source">Bemidbar 3:12</a><a href="RashiBemidbar8-17" data-aht="source">Bemidbar 8:17</a><a href="RashiDevarim10-8" data-aht="source">Devarim 10:8</a><a href="RashiShemuelI2-27" data-aht="source">Shemuel I 2:27</a><a href="R. Shelomo Yitzchaki (Rashi)" data-aht="parshan">About R. Shelomo Yitzchaki</a></multilink>, <multilink><a href="RashbamShemot19-22" data-aht="source">Rashbam</a><a href="RashbamShemot19-22" data-aht="source">Shemot 19:22</a><a href="RashbamDevarim10-8" data-aht="source">Devarim 10:8</a><a href="R. Shemuel b. Meir (Rashbam)" data-aht="parshan">About R. Shemuel b. Meir</a></multilink>, <multilink><a href="IbnEzraShemotLongCommentary32-29" data-aht="source">Ibn Ezra</a><a href="IbnEzraShemotLongCommentary19-22" data-aht="source">Shemot Long Commentary 19:22</a><a href="IbnEzraShemotLongCommentary32-29" data-aht="source">Shemot Long Commentary 32:29</a><a href="IbnEzraShemotShortCommentary19-22" data-aht="source">Shemot Short Commentary 19:22</a><a href="IbnEzraShemotShortCommentary24-1" data-aht="source">Shemot Short Commentary 24:1</a><a href="IbnEzraDevarim10-8" data-aht="source">Devarim 10:8</a><a href="R. Avraham ibn Ezra" data-aht="parshan">About R. Avraham ibn Ezra</a></multilink>, <multilink><a href="SefornoMaamarKavvanotHaTorah6-13" data-aht="source">Seforno</a><a href="SefornoShemot24-18" data-aht="source">Shemot 24:18</a><a href="SefornoShemot31-18" data-aht="source">Shemot 31:18</a><a href="SefornoShemot32-29" data-aht="source">Shemot 32:29</a><a href="SefornoBemidbar3-13" data-aht="source">Bemidbar 3:13</a><a href="SefornoMaamarKavvanotHaTorah6-13" data-aht="source">Maamar Kavvanot HaTorah 6:13</a><a href="R. Ovadyah Seforno" data-aht="parshan">About R. Ovadyah Seforno</a></multilink>, <multilink><a href="KeliYekarShemot28-1" data-aht="source">Keli Yekar</a><a href="KeliYekarShemot28-1" data-aht="source">Shemot 28:1</a><a href="KeliYekarBemidbar3-13" data-aht="source">Bemidbar 3:13</a><a href="R. Shelomo Ephraim Luntschitz (Keli Yekar)" data-aht="parshan">About R. Shelomo Ephraim Lunshitz</a></multilink>, Hoil Moshe</mekorot>
+
<mekorot><multilink><a href="PhiloOnSpecialLaws3-126-127" data-aht="source">Philo</a><a href="PhiloOnSpecialLaws3-126-127" data-aht="source">On Special Laws 3:126-127</a><a href="Philo" data-aht="parshan">About Philo</a></multilink>, <multilink><a href="RashiDevarim10-8" data-aht="source">Rashi</a><a href="RashiBereshit25-31" data-aht="source">Bereshit 25:31</a><a href="RashiShemot19-22" data-aht="source">Shemot 19:22</a><a href="RashiShemot28-41" data-aht="source">Shemot 28:41</a><a href="RashiShemot31-18" data-aht="source">Shemot 31:18</a><a href="RashiShemot32-29" data-aht="source">Shemot 32:29</a><a href="RashiBemidbar3-12" data-aht="source">Bemidbar 3:12</a><a href="RashiBemidbar8-17" data-aht="source">Bemidbar 8:17</a><a href="RashiDevarim10-8" data-aht="source">Devarim 10:8</a><a href="RashiShemuelI2-27" data-aht="source">Shemuel I 2:27</a><a href="R. Shelomo Yitzchaki (Rashi)" data-aht="parshan">About R. Shelomo Yitzchaki</a></multilink>, <multilink><a href="RashbamShemot19-22" data-aht="source">Rashbam</a><a href="RashbamShemot19-22" data-aht="source">Shemot 19:22</a><a href="RashbamDevarim10-8" data-aht="source">Devarim 10:8</a><a href="R. Shemuel b. Meir (Rashbam)" data-aht="parshan">About R. Shemuel b. Meir</a></multilink>, <multilink><a href="IbnEzraShemotLongCommentary32-29" data-aht="source">Ibn Ezra</a><a href="IbnEzraBemidbar3-1" data-aht="source">Bemidbar 3:1</a><a href="IbnEzraBemidbar16-1" data-aht="source">Bemidbar 16:1</a><a href="IbnEzraBemidbar16-28" data-aht="source">Bemidbar 16:28</a><a href="IbnEzraShemotLongCommentary19-22" data-aht="source">Shemot Long Commentary 19:22</a><a href="IbnEzraShemotShortCommentary19-22" data-aht="source">Shemot Short Commentary 19:22</a><a href="IbnEzraShemotShortCommentary24-1" data-aht="source">Shemot Short Commentary 24:1</a><a href="IbnEzraShemotLongCommentary32-29" data-aht="source">Shemot Long Commentary 32:29</a><a href="IbnEzraDevarim10-8" data-aht="source">Devarim 10:8</a><a href="R. Avraham ibn Ezra" data-aht="parshan">About R. Avraham ibn Ezra</a></multilink>, <multilink><a href="SefornoMaamarKavvanotHaTorah6-13" data-aht="source">Seforno</a><a href="SefornoShemot24-18" data-aht="source">Shemot 24:18</a><a href="SefornoShemot31-18" data-aht="source">Shemot 31:18</a><a href="SefornoShemot32-29" data-aht="source">Shemot 32:29</a><a href="SefornoBemidbar3-13" data-aht="source">Bemidbar 3:13</a><a href="SefornoMaamarKavvanotHaTorah6-13" data-aht="source">Maamar Kavvanot HaTorah 6:13</a><a href="R. Ovadyah Seforno" data-aht="parshan">About R. Ovadyah Seforno</a></multilink>, <multilink><a href="KeliYekarShemot28-1" data-aht="source">Keli Yekar</a><a href="KeliYekarShemot28-1" data-aht="source">Shemot 28:1</a><a href="KeliYekarBemidbar3-13" data-aht="source">Bemidbar 3:13</a><a href="R. Shelomo Ephraim Luntschitz (Keli Yekar)" data-aht="parshan">About R. Shelomo Ephraim Lunshitz</a></multilink>, Hoil Moshe</mekorot>
 
</category>
 
</category>
 
</approaches>
 
</approaches>
 
</page>
 
</page>
 
</aht-xml>
 
</aht-xml>

Version as of 14:52, 18 February 2016

Selection of the Priests and Levites

Exegetical Approaches

This topic has not yet undergone editorial review

Before the Exodus

The tribe of Levi was singled out to be Levites and Priests already in Egypt, and were perhaps chosen even as early as the Patriarchal Period.

Why was the Levite tribe chosen?
  • Actions in Shechem – According to most of these sources4 it was Yaakov who sanctified the tribe of Levi for Hashem .  Jubilees maintains that this was a reward for Levi's5 avenging of Dinah's honor in Shekhem.6 For elaboration on Jubilees' read of the Shekhem story, see Sin and Slaughter of Shekhem.
  • Moshe's Family – Shemot Rabbah and R"Y Kimchi, in contrast, suggest that the appointment occurred first in Egypt, with Shemot Rabbah implying that it was the elevated character of Moshe's specific family that merited the positions.7  The Midrash suggests that Moshe himself was originally destined for the priesthood, while Aharon was to be a Levite, but after Moshe's repeated refusals of Hashem's mission at the burning bush, Hashem punished him by switching the roles.
"הֲנִגְלֹה נִגְלֵיתִי אֶל בֵּית אָבִיךָ...לִי לְכֹהֵן" – According to R. Yosef Kimchi, this verse in Shemuel supports an early appointment, since it states that already in Egypt Hashem revealed Himself to the House of Levi and chose them to serve him as priests.8 Shemot Rabbah5:16About Shemot Rabbah adds that the tribe had special status in Egypt, not sharing in the bondage of the rest of the nation.9
"בָּעֵת הַהִוא הִבְדִּיל י"י אֶת שֵׁבֶט הַלֵּוִי" – This verse implies that the tribe was first chosen after the Sin of the Golden Calf.10  These sources would suggest that though Levi had been singled out much earlier, it was first with the finished construction of the Mishkan, after the sin, that service was official, with a permanent, regulated character.  Thus, it was only then that the tribe actively took on its elevated role, with daily acts of service.
The "כֹּהֲנִים" of Shemot 19 – This position could suggest that the word Kohanim here refers to the same people as it does in the rest of Tanakh:  Aharon's sons who have already been appointed.11   This might be supported by the similar cast of characters that are mentioned both in this verse (Moshe, Aharon, the Kohanim and nation) and in the parallel verse of Shemot 24 (Moshe, Aharon, Nadav and Avihu, and Elders, or the representatives of the nation).12
Sacrifices before the Mishkan – These sources might maintain that the "נַעֲרֵי בְּנֵי יִשְׂרָאֵל" who bring offerings at Sinai in Shemot 24  also refer to Aharon's sons.  It is not clear, however, why they would be referred to in this manner rather than by either their names or title.13 According to Jubilees, it is possible that even prior to this event, all sacrificial worship from the time of Levi and on was done by members of the tribe.
Levites and the Golden Calf – According to this position, it is possible that it was only the Levites who heeded Moshe's call and stood against the idolatry of the Calf specifically because they had already been designated to serve God.  In other words, the Levites were not chosen because they alone served Hashem when everyone else sinned,, but rather, they alone served Hashem because they had previously been chosen.
"מִלְאוּ יֶדְכֶם הַיּוֹם לַי"י... לָתֵת עֲלֵיכֶם הַיּוֹם בְּרָכָה" – These sources might explain, as does R. Saadia Gaon, that the words "מִלְאוּ יֶדְכֶם הַיּוֹם לַי"י" constitute Moshe's congratulations to the Levites on their work, but do not connote an induction into service of Hashem.  Though the Levites did receive a blessing and reward for their actions, this was not an elevation in status, which they already had, but a general blessing of good.
Status of the Firstborn – This approach might maintain that the firstborns never held any Levite or priestly status.  They were sanctified in Egypt because they had been saved from the Plague of the Firstborn,14 but this was not accompanied by any cultic role.15
Switching of Levites and Firstborns in Bemidbar 3 – If the firstborns never played a cultic role, it is not clear what it means that the Levites were chosen to serve in their stead.  These sources might explain that the redemption of Bemidbar 3 does not imply a substitution of service, but simply a redemption of the firstborn's holy status.
Korach's Rebellion
Chronology

Before the Sin of the Golden Calf

The Priests were designated before the Sin of the Golden Calf, in preparation for the erection of the Mishkan.  This positions subdivides regarding when the Levites were chosen:

Together with the Priests

The Levites and Priests were chosen together.

Why was the Levite tribe chosen? R. Yosef Bekhor Shor focuses on the need to choose a tribe (and not individuals) to serve Hashem, rather than why the tribe of Levi specifically, was chosen.  Nonetheless, he might suggest that Hashem picked them in Moshe and Aharon's merit.
Status of the Firstborn – R. Yosef Bekhor Shor maintains that the firstborns initially had elevated status, serving as Priests and Levites.  With the establishment of the Tabernacle and the beginning of regular service, however, they were replaced by the tribe of Levi.
Switching of Levites and Firstborns
  • Practical purpose – According to R"Y Bekhor Shor, the switch was not prompted by either the need to reward the tribe of Levi nor a desire to punish the firstborns.  It was rather a practical decision.  Hashem wanted the service to be confined to a family line, so that the laws could be passed from father to son, facilitating their transmission and ensuring expertise.17   Moreover, since the firstborns were due to receive a double portion in the land they would never be as free to devote themselves entirely to the service of Hashem.18
  • Sin and corrective – Another possibility is to say that the firstborns were rejected due to sin, and the Levites were appointed to correct it.  If one posits that the "אֲצִילֵי בְּנֵי יִשְׂרָאֵל" who "saw God" during the covenantal ceremony of Shemot 24 were the firstborns,19 then it is possible that they were disqualified when they overstepped their bounds.  The Levites were chosen instead, with one of their main roles being that they guard the Sanctuary so that no one who is unauthorized comes too close.
Levites and the Golden Calf – R"Y Bekhor Shor asserts that the Levites were not the only ones who answered Moshe's call to kill the worshipers of the Calf, and there were many people from the rest of the nation who joined as well.20  As such, the Levites' actions during the incident were not so unique to merit them the reward of elevated status.
"מִלְאוּ יֶדְכֶם הַיּוֹם לַי"י... לָתֵת עֲלֵיכֶם הַיּוֹם בְּרָכָה" – R"Y Bekhor Shor is consistent in maintaining that the blessing spoken of here is unrelated to the tribe's appointment as Levites and Priests.  He asserts, instead, that it refers to their being included in the blessings of Moshe before his death.  Though they had not merited a blessing by Yaakov, this action warranted them one.
Chronology of the Command to Build the Mishkan – This approach is supported by the simple order of the verses, according to which Aharon is commanded regarding his role as Kohen before the Sin of the Golden Calf.21  Though the Levites are not mentioned there, it is logical that they might have been chosen at the same time since it was the establishment of the Tabernacle that prompted a need for their service.
The "כֹּהֲנִים" of Shemot 19 – According to R"Y Bekhor Shor these were the firstborns, since at this point, before the command to build the Mishkan, they, rather than members of the tribe of Levi, had the status of priests.22
"וַיִּשְׁלַח אֶת נַעֲרֵי בְּנֵי יִשְׂרָאֵל וַיַּעֲלוּ עֹלֹת " – R"Y Bekhor Shor maintains that these "youth" who sacrifice also refer to the firstborns who still had priestly status at this point in the narrative.
"בָּעֵת הַהִוא הִבְדִּיל י"י אֶת שֵׁבֶט הַלֵּוִי" – Though Hashem had chosen the tribe of Levi without any connection to their role the sin of the Calf, practically the Tabernacle was built after the sin and so "it was at that time" that the tribe was actively separated.
"הֲנִגְלֹה נִגְלֵיתִי אֶל בֵּית אָבִיךָ...לִי לְכֹהֵן" – This verse would appear to be problematic for this approach as it suggests that the Levites were chosen to be priests already in Egypt.  R"Y Bekhor Shor might explain that the verses speak of two distinct events, a revelation that occurred in Egypt, and the choosing of the Kohanim which took place only much later.
Korach's Rebellion

After the Priests

The choosing of the Levites was distinct from the sanctification of the Priests and only occurred after the Sin of the Golden Calf.

Chronology of the Command to Build the Mishkan – This approach works with the simple chronology of the verses which presents Aharon as being designated prior to the Sin of the Golden Calf, when Hashem commanded to build the Mishkan, but only speaks of the consecration of the rest of the Levites after the story of the sin, in the second year.23
Why were Aharon and the Levites Chosen? Abarbanel asserts that Aharon merited the priesthood because, after Moshe, no one else in Israel came close to his level of perfection and prophecy.  The Levites, in contrast, were chosen due to the fact that they did not participate in the Sin of the Golden Calf, but rather defended the honor of Hashem.24 The two appointments, thus, were totally distinct and for different reasons.
Status of the Firstborn
  • No priestly status – Ramban25 suggests that until the Tabernacle was built every individual was allowed to sacrifice, and that the firstborns did not have any unique priestly status. Nonetheless, he appears to maintain that after they were sanctified during the Plague of Firstborns they did have Levite status (which is why they are later replaced not by Aharon and sons, but by the Levites).26  It is unclear, however, what that would entail before the Tabernacle was built, when there was nothing to carry or guard.27
  • Partial priestly status – Abarbanel might agree that in the long term, the firstborns were chosen to take on Levite (rather than priestly) roles,28 but in contrast to Ramban, he suggests that before Aharon was appointed they might have also played a role in sacrificing.
Sin of the Golden Calf and Replacing of the Firstborns – Abarbanel asserts that the firstborns were rejected for having sinned by the Golden Calf, while the Levites, who did not sin, were rewarded by taking over their previous position.
"מִלְאוּ יֶדְכֶם הַיּוֹם לַי"י... לָתֵת עֲלֵיכֶם הַיּוֹם בְּרָכָה" – This position could suggest, like Rashi below, that in the words "מִלְאוּ יֶדְכֶם הַיּוֹם לַי"י" Moshe dedicated the Levites to Hashem, and gave them the blessing of elevated status.
"בָּעֵת הַהִוא הִבְדִּיל י"י אֶת שֵׁבֶט הַלֵּוִי" – As this verse seems to suggest that both the Levites and Priests29 were chosen in the aftermath of the Sin of the Golden Calf, it is difficult for the position. Ramban explains that the phrase "בָּעֵת הַהִוא" refers not to the zealous actions of the Levites, but to the later period when Moshe attained forgiveness for Aharon and the nation. As such, Moshe is saying that at that time, Hashem reaffirmed his choosing of Aharon as Kohen, which had been temporarily nullified due to the sin.30
The "כֹּהֲנִים" of Shemot 19 – Abarbanel posits that these could refer either to the firstborns, who, in his opinion, still had this role, or to Nadav and Avihu who are so called after their future position.
"וַיִּשְׁלַח אֶת נַעֲרֵי בְּנֵי יִשְׂרָאֵל וַיַּעֲלוּ עֹלֹת " – Ramban maintains that these נערים refer to innocent youths, who had never yet touched a female and in their holiness were chosen to bring these sacrifices.  This is consistent with his opinion that before the Tabernacles' construction, everyone was allowed to bring individual sacrifices.
"הֲנִגְלֹה נִגְלֵיתִי אֶל בֵּית אָבִיךָ...לִי לְכֹהֵן" – This approach might posit that the verse is not speaking of just one evnt that happened in Egypt, but a prophecy which was given in egypt and the choosing of the priests which took place later.
Rebellion of Korach

In the Aftermath of the Sin of the Golden Calf