So this week we are reading “Vayehi Bayom HaShmini”—the portion that speaks about the eighth day.

For seven days, they prepared for the construction and service of the Mishkan. Then finally, on the eighth day, everything came together. After intense prayers and intervention by Moshe and Aharon, Hashem brought His Shechinah down. A fire descended from Heaven and consumed the sacrifices, and from that point onward, the Mishkan remained holy—it became the place where Hashem’s presence was revealed and felt.

But of course, the key word in this parsha is Shmini—the number eight.

Now, we understand that eight is one more than seven. And seven, we know, corresponds to the days of the week: six days of work, and the seventh is Shabbos.

What is interesting is that a week does not reflect any physical change. Unlike a month, which follows the cycle of the moon, or a year, which follows the cycle of the sun—where Pesach comes out in Chodesh HaAviv and the seasons shift—every time measurement we associate with numbers usually corresponds to something physical happening in the world.

But not a week.

Every seven days, nothing physically changes. There is no visible cycle. One could theoretically make it six days, eight days, or nine days—there is no physical necessity for seven. The only reason we have a seven-day cycle is because Hashem created the world in six days and rested on the seventh.

That is why we have this continuous cycle: Sunday, Monday, and so on until Shabbos, and then it begins again. That is the concept of seven.

Where does this number come from?

In Kabbalah, it is explained that the number seven corresponds to the Sefiros. As the possuk says:
“Sheshes yamim asah Hashem es hashamayim ve’es ha’aretz, u’vayom hashvi’i shavas vayinafash.”
Hashem created the heavens and the earth in six days and rested on the seventh.

Kabbalah explains that these six days correspond to the six Sefiros—from Chesed through Yesod—and together with the seventh, Malchus, they form the complete structure of seven. These Sefiros are the channels through which the world is created and sustained in Atzilus. That is the meaning of the natural order—seven.

Similarly, we find this reflected in the Avos and Imahos: the three forefathers—Avraham, Yitzchak, and Yaakov—and the four matriarchs—Sarah, Rivkah, Rachel, and Leah—together make seven. Each one corresponds to a Sefirah: Avraham is Chesed, Yitzchak is Gevurah, Yaakov is Tiferes, and so on. Again, we see the pattern of seven as the complete structure within creation.

But then comes the number eight.

Eight represents something entirely different. It represents that which is beyond creation—beyond the natural order. While seven corresponds to Hishtalshelus, the orderly chain through which the Divine energy descends into the world, eight represents a level that transcends that entire system.

It is a step above.

This is why the time of Moshiach is associated with the number eight. As we speak about Acharon shel Pesach, which is the eighth day of Pesach, we connect it to Moshiach. Seven represents the normal structure of the world, but eight represents the state of the world as it will be elevated to its ultimate perfection.

We also find that the kinnor—the harp—in the Beis HaMikdash had seven strings. But regarding Moshiach, it is said that the kinnor will have eight strings. Again, this represents a higher level, beyond the natural order of seven.

This is the level that transcends Hishtalshelus.

And as the Alter Rebbe explains in the maamar, something very profound emerges from this idea—especially when we think about what Moshiach will reveal.

What will Moshiach give to the Jewish people?

He will give the level of re’iyah—the ability to see.

Right now, our experience of spirituality is on the level of shemiyah—we hear, we understand. When you learn something, when you study, when you read, you grasp it intellectually. You process it, you analyze it, and you come to a conclusion.

But because it is intellectual, it is not absolute. It is possible that someone will come and challenge you and say, “You misunderstood. Your conclusion is incorrect.” And indeed, you may realize that you didn’t fully grasp the truth.

That is the limitation of understanding through shemiyah—through hearing and intellect.