Likkutei Torah: In the Maamor with the opening words ‘Lo Hibit Oven Beyaakov’.
This Avodah: Which requires a descent into the confines of this world, in comparison to the true existence of every Jew who is really on the level of ‘Yisroel’.
Which is holy on its own: The Talmud (Beitza 17b) A Tanna taught a Braisa before Ravina and concludes the blessing with: Who sanctifies the Jewish people, Shabbat, and the seasons. Ravina said to that Tanna: Is that to say that the Jewish people sanctify Shabbat? Isn’t Shabbat already sanctified from the six days of Creation? Every seventh day is automatically Shabbat, without the need for any declaration on the part of the Jewish people. Rather, amend it and say as follows: Who sanctifies Shabbat, the Jewish people, and the seasons, as the Jewish people indeed sanctify the New Moon and the Festival days. Since Shabbos does not need to be refined because it is holy already on its own it has a different Avodah of revelation.
A holy nation: The B’nei Yisroel are also holy already on their own as the Possuk states: (Shmos Yisro 19:6) וְאַתֶ ם תִהְיוּ־לִי מַמְלֶכֶת כֹהֲנִים וְגוֹי קָדוֹש אֵלֶה הַדְבָרִ ים אֲשֶר תְדַבֵר אֶל־בְנֵי יִשְרָאֵל And you shall be to Me a kingdom of princes and a holy nation.' These are the words that you shall speak to the children of Israel."
Same applies: Not only to Shabbos.
Yom Tov: For example, Shovuos and Rosh Hashono.
Mikroei Kodesh: The Possuk (Vayikra Emor 23:2/4) דַבֵר אֶל־בְנֵי יִשְרָאֵל וְאָמַרְ תָ אֲלֵהֶם מוֹעֲדֵי ה אֲשֶר־תִקְרְ אוּ אֹתָם מִקְרָאֵי קֹדֶש אֵלֶה הֵם מוֹעֲדָי “Speak to the B’nei Yisroel and say to them: Hashem's appointed holy days that you shall designate as holy occasions. These are My appointed holy days” אֵ לֶה מוֹעֲדֵי ה׳ מִקְרָאֵי קֹדֶש אֲשֶר־תִקְרְ אוּ אֹתָם בְמוֹעֲדָם “These are Hashem’s appointed holy days, holy occasions, which you shall designate in their appointed time”.
As the Possuk: (Vayikra Emor 23:15) וּסְפַרְ תֶם לָכֶם מִמָחֳרַת הַשַבָ ת מִיּוֹם הֲבִיאֲכֶם אֶת־עֹמֶר הַתְנוּפָה שֶבַע שַבָתוֹת תְמִימֹת תִהְיֶינָה “And you shall count for yourselves, from the morrow of the rest day from the day you bring the Omer as a wave offering seven weeks; they shall be complete” The Talmud (Menochos 65b) establishes: Therefore, when the verse states: “The morrow after the day of rest (Vayikra Emor 23:16), it means: The morrow after the Festival, as the determination of Festivals is by the court.
Morrow of the rest day: The beginning of the counting of the Omer starts on the day after the first day of the ‘Yom Tov’ Pessach but the Torah calls it ‘Shabbos’.
