While the Israelites are encamped in the plains of Moav east of the Jordan, we learn about those sacrifices that would be offered only after they would cross over into the land of Israel. These are the additional sacrifices (musafim) for all the special occasions of the year, the first of which is Shabbat:

And on the Shabbat day, two lambs (KEVASIM) of the first year without blemish, and two tenths of fine flour as a meal offering mingled with oil, and its libation. This is the burnt offering of each Shabbat, in addition to the continual burnt offering and its libation (Bamidbar 28:9-10).

Few themes are as central to the Torah as Shabbat. And few are as ubiquitous. It is found in every book of the Torah:
• Bereishit 2:1-3
• Shemot 16:22-30, 20:8-11, 23:12, 31:12-17, 34:21, 35:1-3
• Vayikra 19:1-3, 23:3, 26:2
• Bamidbar 15:32-36, 28:9-10
• Devarim 5:12-15.
The prophets and sages also exhort the people about the sanctity of Shabbat:
• Yeshaya 56:1-7, 58:13-14, 66:23
• Yirmiyahu 17:19-27
• Yechezkel 20:10-13, 46:1-5
• Nechemia 9:13-14, 10:29-34, 13:16-23.
At least 6 commandments are directly related to Shabbat (Sefer HaMitzvot of the Rambam, Positive Commandments 41, 154, 155 and Negative Commandments 320, 321, 322). Violation of Shabbat can even carry the death penalty.

In view of all this, it is surprising how modest is the Shabbat musaf offering:
two lambs of the first year without blemish, and two tenths of fine flour as a meal offering mingled with oil, and its libation.
Why isn’t the Shabbat sacrifice more elaborate?

Perhaps, rather than thinking of the sacrifice as meager, we should focus on the significance of the number two. After all, there are two dynamically interdependent dimensions of Shabbat. There is the enhancement of Shabbat through positive acts such as Kiddush, candle lighting and Havdalah, which are all included in the verse in the first version of the Decalogue:
Remember (ZACHOR) the Shabbat day to sanctify it (Shemot 20:8).
Then there is the protection of the sanctity of Shabbat through refraining from melachah (work), exemplified by the parallel verse in the second version of the Decalogue:
Observe (SHAMOR) the Shabbat day to sanctify it (Devarim 5:12).
Both elements of Shabbat, ZACHOR and SHAMOR are crucial, and this is reflected in the paired elements in the Shabbat musaf.

Abravanel (Don Yitzchak Abravanel, 1437-1508), attributing the above explanation to unnamed “recent commentaries,” nevertheless rejects it. This is because, as the Sages taught (Shavuot 20b), Hashem uttered ZACHOR and SHAMOR at Sinai simultaneously, so these pronouncements cannot reflect the dual nature of Shabbat.

Instead, says Abravanel, Shabbat’s duality is found in the two pivotal events that it recalls:
“One, that it is a reminder of the creation of the universe and its generation, as it says in the commandment, “For in six days Hashem made the heavens and the earth, and on the seventh day He rested and was refreshed” (Shemot 31:17). And the second, that it is a reminder of the Exodus from Egypt, as it says, “And you shall remember that you were a slave in the land of Egypt, and Hashem, your G-d, took you out from there with a strong hand and an outstretched arm. Therefore Hashem, your G-d, has commanded you to celebrate the Shabbat day (Devarim 5:15).”

The origin of this idea is in Rambam’s Guide of the Perplexed (III, 31). Abravanel adds that the two lambs (KEVASIM) of Shabbat symbolize Hashem’s two instances of subjugation (KAVASH):
“One corresponds to the Creation, when the Holy One, Blessed be He subdued the world and bounded it by His Creation. And the second lamb corresponds to the Exodus from Egypt when He conquered Pharaoh and Egypt with trials, signs and wonders (Devarim 4:34).”

Abravanel suggests an additional “conceptual and scientific” approach, based on Rambam’s Guide (I, 71):
“That Hashem in His arranging the universe is both the active Cause and the preserving and perpetuating Cause, since it is He Who created and generated it out of absolute nothingness, and it is He Who preserves and perpetuates it.”

Thus the twofold offering of Shabbat demonstrates that Hashem not only created the universe, but also maintains it.

An experiential perspective is found in Da’at Zekenim Miba’alei HaTosafot (a collection of Torah commentaries taken from the Tosafists, disciples of Rashi from the 12th-14th centuries). Quoting the Midrash Shochar Tov, Da’at Zekenim says that the double sacrifice is perfectly suited to Shabbat:
“The Shabbat complained before the Holy One, Blessed be He, regarding this. Said the Holy One, Blessed be He, to her, ‘Behold, this is the musaf that is appropriate to you. Everything associated with you is twofold. You have a twofold song: “A psalm, a song for the Shabbat day” (Tehillim 92). You have twofold delight, as it says, “And you shall call the Shabbat a delight, and to the holy one of Hashem honored” (Yeshaya 58:13). Your punishment is twofold: “Whoever profanes it shall surely be put to death” (Shemot 31:14). Your bread (lechem mishneh) is twofold. Therefore, it is fitting that your sacrifice be twofold.”

The Midrash continues with an allegory:
“A king told his servants, ‘Prepare a meal for my sons.’ They prepared two types of food for them. After they dined, the king commanded that they prepare him his meal. His servants said to him, ‘What shall we prepare for you?’ and he asked them, ‘What did you serve my sons?’ When they told him, he said, ‘The same for me. Do not prepare for me any more than you did for my sons.’”
According to this, the offering to Hashem on Shabbat consists of two lambs… and two tenths of fine flour as a reflection of the redoubled distinctiveness of the day, and because Hashem, as it were, celebrates Shabbat together with His people.

The simplicity of the Shabbat offerings is the key to its beauty, holiness and joy. We are truly privileged to have been given this gift.