Moshe's commands of verse 32-33 – This position could posit that Moshe's words in verse 32 were addressed to the nation at large, as they gathered the manna in the first days that it fell. Afterwards, Moshe turned specifically to Aharon with the details of how and where the manna was to be stored.
"לִפְנֵי י"י" versus "לִפְנֵי הָעֵדֻת" – R. Yosef Bekhor Shor distinguishes between the two terms. "לִפְנֵי י"י" refers to the altar where sacrifices were brought,1 while "לִפְנֵי הָעֵדֻת" refers to the Ark of Testimony in the Mishkan. Thus, the verses teach that at first the manna was placed near the altar for safekeeping, but after the Mishkan was built, it was transferred there. Though verses 32-33 are in their chronological place, verse 34 is not and comes here only to complete the story.
Role of Aharon – Since at this point in Sefer Shemot, Aharon has not yet been appointed as a high priest, and the altar would have been accessible to all, it is not clear why the task of storing the manna was given to him specifically. Perhaps he was chosen not in any cultic capacity, but in his leadership role as Moshe's spokesman and assistant.
Why now? If the container of manna was supposed to serve as a relic for future generations then why was it collected already in the first year, rather than the fortieth?
It is possible that Hashem specifically wanted to preserve the manna at the outset of the miracle, when the people were still marveling at and in awe of the phenomenon. By the fortieth year, the nation were no longer appreciative of the miracle, but tired and disgusted by it.2 Announcing then that they should preserve the manna so as to show their children this wonderful gift might have been counter-productive.
Alternatively, prior to the Sin of the Golden Calf, the nation was scheduled to enter the land immediately after the revelation at Sinai. As such, now was the time to collect a sample, while the manna was still raining down.
Chronology of verse 35 – R"Y Bekhor Shor would agree that verse 35 is recorded here only to close the story. R. Yosef KaraShemot 16:35About R. Yosef Kara further notes that the mentioning of the manna's forty year duration already here teaches that the selav, in contrast, was only a one-time occurrence. This provides the backdrop for understanding why in Bemidbar 11 the nation once again complains about not having meat.3
"קְצֵה אֶרֶץ כְּנָעַן" versus "אֶרֶץ נוֹשָׁבֶת" – R"Y Bekhor Shor does not address the meaning of these terms and what they imply about when the manna ceased. He could say, like R. Yosef KaraShemot 16:35About R. Yosef Kara, that both terms refer to the land of Israel, with the second phrase ("קְצֵה אֶרֶץ כְּנָעַן") serving to explicate the first ("אֶרֶץ נוֹשָׁבֶת").4 The verse would then be compatible with the description of the cessation of the manna in Yehoshua 5:10-12.5
When was this epilogue written?
R"Y Bekhor Shor might suggest that each part of the epilogue was written when it happened, verses 32-33 in the first year, verse 34 in the second, and verse 35 in the fortieth.6 However, since verse 35 speaks of events after Moshe's death, he would have to posit that either it was written by Moshe via prophecy, or by Yehoshua (similar to the opinion in Bavli Bava BatraBava Batra 15aAbout the Bavli regarding the last verses of Torah).7
Second Year
Aharon put the container of manna in the Ark of Testimony after the Mishkan was built in the second year.
These sources identify the two terms, with both referring to the Ark. Ibn Ezra explains that since Hashem's presence was felt between the cherubs atop the ark, this was considered "before Hashem." It is this mention of the ark, which was only built in the second year, that motivates this position to date the story then.
Why now?
R. D"Z Hoffmann points out that the original plan was to enter the land soon after the Tabernacle was constructed.8 As such, this is the logical time to collect a sample for future generations.
Alternatively, Hashem simply waited until there was an appropriate place to store the manna, and only then issued the command.
Role of Aharon – According to R. D"Z Hoffmann, since the manna was being placed in the Ark, Aharon was charged with the task of placing the container there, as he was the guardian of the Holy of Holies. Similarly, at the end of his life (Devarim 31:9,25-26), Moshe gives the Torah which was to be placed next to the Ark to the priests responsible for carrying the Ark.
Chronology of the commands in verses 32-33 – Though these sources agree regarding the timing of Aharon's actions in verse 34, they disagree concerning when the initial commands of verses 32-33 were given:
Connected tofulfillment– Ibn Ezra and R. D"Z Hoffmann assert that the commands were given in proximity to their fulfillment, and the entire passage only occurred after the construction of the Tabernacle.910
Disconnected to fulfillment– According to Shadal,11 in contrast, Moshe's pronouncement to the people (verse 32) is in its proper place and occurred as they gathered the manna, but Moshe only gave Aharon his specific instructions when the time came for him to fulfill them in the second year.12
Chronology of verse 35 – All these sources agree that this verse is out of chronological place, and is only found here so as to provide closure to the narrative. They disagree, however, regarding both to what time period it refers and when it was written – see below.
Eating manna – "קְצֵה אֶרֶץ כְּנָעַן" versus "אֶרֶץ נוֹשָׁבֶת"
Distinct terms – Many of these sources assume that the different terms refer to two distinct places, and hence separate stages in the cessation of the manna:
Gradual Cessation – Ibn Ezra understands "אֶרֶץ נוֹשָׁבֶת" to refer to the lands of Sichon and Og, and suggests that at that point there was an option of eating either manna or natural bread.13 Only when they got to "קְצֵה אֶרֶץ כְּנָעַן", to Gilgal, did the manna cease totally.14 R. D"Z Hoffmann explains similarly that when they had reached civilization, the manna only fell when there was not ample natural food to feed the nation, but it only completely stopped when they crossed the Jordan.
Falling versus eating – Rashi reads the phrases in the opposite way, suggesting that "אֶרֶץ נוֹשָׁבֶת" means Israel proper, and that "קְצֵה אֶרֶץ כְּנָעַן" refers to Arvot Moav. He claims that the manna stopped falling with the death of Moshe, but what had been collected lasted and was eaten until the arrival in Gilgal.15
Identical terms – In contrast to the above, Shadal identifies the two terms, suggesting that both refer to Arvot Moav, which is on the eastern edge of Canaan. Thus, the verse is not informing the reader when the manna ceased,16 but simply remarking that the nation ate it until the end of the period discussed in Torah. The doubling is explained as the Torah's attempt to clarify an ambiguous term.
When was this epilogue written?
First year – Abarbanel might claim that the entire epilogue was written in the first year, despite some of the events not yet having happened, and some (cessation of the manna) not taking place until after his death.17 Moshe simply wrote about the future via prophecy, just as he had regarding his own death. If so, this would mean that before the Spies had actually sinned and their punishment was decreed, Hashem already hinted to Moshe that the nation was to wander in the desert for forty years.18
Fortieth year – In contrast, according to Shadal,19 verses 33-35 (those which he regards as achronological) were all written by Moshe in the fortieth year. According to him, Moshe wrote nothing via prophecy, but rather recorded everything after the fact. Thus he writes of the placement of the manna in the Mishkan only years later, and when discussing the length of time that the manna was eaten, he speaks only of that which he had knowledge, that the nation ate it until they arrived at the border of Canaan.
Fortieth Year
The manna was first put aside for storage in the fortieth year.
Commands of verses 32-33 – This approach would posit that the commands (and not just their fulfillment) were first relayed in the fortieth year. When the people began to prepare for entry into the land and its accompanying natural mode of subsistence, Moshe told the nation (verse 32) to preserve some of the manna for posterity. He then turned to Aharon with the specifics of how this was to be accomplished (verse 33).
Why now? According to this position, the command was given immediately when the nation moved out of the Wilderness to civilized land.20 Although the nation was still provided for by the manna until they entered Israel, at this point they once again encountered and had the potential to eat from natural sources. Thus, it is at this transition point, when the necessity for manna began to diminish, that Hashem commanded them to save a sample of the miraculous provision.
"לִפְנֵי י"י" versus "לִפְנֵי הָעֵדֻת" – According to this position, both these terms refer to the Ark of Testimony.
Role of Aharon – Even though by the fortieth year it was already known that Aharon was not going to be entering the land of Israel, he was still the high priest. Since the manna was stored with the Ark, Aharon was the natural candidate for this assignment.
Chronology of verse 35 – "קְצֵה אֶרֶץ כְּנָעַן" versus "אֶרֶץ נוֹשָׁבֶת" – This position might suggest, like Shadal above, that both terms refer to the lands east of the Jordan. Even though the manna was also eaten afterwards, Moshe is only speaking of the events that occurred in his own lifetime.
When was this epilogue written? This position would probably assert that these verses were all written after the events that they describe happened. As such, the entire epilogue both occurred and was recorded in the fortieth year.