The seven “guests”, “ushpizin”, associated with the 7 days of Sukkot correspond to the 7 Kabbalistic Sefirot, from “chessed” (lovingkindness) to “malchut” (kingship). No surprise that the common theme of the “guests” who visit us on the seventh day of Sukkot is the idea of “keter” – “crown.”
From the Rebbe’s explanations:
– The “guests”, who come to visit us in our sukkas today, are King David and the Rebbe Rashab. The common theme of these “ushpizin” is that both are associated with the idea of “keter” – “crown.”
• A “crown” is one of the main objects in a monarchy, to the extent that the king’s splendor depends on it — as stated:
“Your eyes shall see the king in his splendor”(Yeshayahu 33:17).
This is particularly true of the kings from the King David’s dynasty, as our Sages have said:
“It was a testimony to the house of David that whoever was eligible for the kingship, the crown fitted him, but it would not fit anyone who was not eligible” (ע”ז מד, א).
Moreover, David is the “Sweet Singer of Israel” — author of Tehillim. Tehillim begins with the word “Ashrei,” which word appears twenty times in Tehillim. The number twenty, in its turn, corresponds to “keter” — crown (more on this – below).
• The Rebbe Rashab was born in the year 5621 – תרכ”א. In Hebrew this year is often called “Keter-Aleph” – after the two last units of the year’s name in Hebrew (כ”א). Further, his birthdate is the twentieth of Cheshvan — כ’ חשוון. In Hebrew, where all letters have a numerical value, “twenty” corresponds to the letter “chaf”, which symbolizes “keter”— crown.
This brings us closer to the idea of Hosha’ana Rabbah. It’s the last day of Sukkot, however, it’s really special. According to the principle that “the end is rooted in the beginning”, Hosha’ana Rabbah is rooted in the beginning of all the worlds — the level of “keter”…
(From the Rebbe’s talk on the day of Hosha’ana Rabbah, 5744)