1.
יְמֵי חַנֻכָּה אֵלּוּ לְהוֹדוֹת וּלְהַלֵּל וְכוּ'.
מאי חנוכה דתנו רבנן בכה בכסליו יומי דחנוכה תמניא אינון דלא למספד בהון ודלא להתענות בהון שכשנכנסו יוונים להיכל טמאו כל השמנים שבהיכל וכשגברה מלכות בית חשמונאי ונצחום בדקו ולא מצאו אלא פך אחד של שמן שהיה מונח בחותמו של כהן גדול ולא היה בו אלא להדליק יום אחד נעשה בו נס והדליקו ממנו שמונה ימים לשנה אחרת קבעום ועשאום ימים טובים בהלל והודאה
The Gemara asks: What is Hanukkah, and why are lights kindled on Hanukkah? The Gemara answers: The Sages taught in Megillat Ta’anit: On the twenty-fifth of Kislev, the days of Hanukkah are eight. One may not eulogize on them and one may not fast on them. What is the reason? When the Greeks entered the Sanctuary they defiled all the oils that were in the Sanctuary by touching them. And when the Hasmonean monarchy overcame them and emerged victorious over them, they searched and found only one cruse of oil that was placed with the seal of the High Priest,undisturbed by the Greeks. And there was sufficient oil there to light the candelabrum for only one day. A miracle occurred and they lit the candelabrum from it eight days. The next year the Sages instituted those days and made them holidays with recitation of hallel and special thanksgiving in prayer and blessings.
-In other words, the days of Hanuka established a reason to praise and thank Hashem because a miracle happened. 1 - to find the jar of oil 2- that it lasted more than 1 day
-From a kabbalistic perspective chanuka - 8 days is the connection between Binah and Hod. Hod - hodaah.
2.
Rabbi Pinchas, Rabbi Levi and Rabbi Yochanan [said] in the name of Rabbi Menachem from Gallia: In the time to come, all sacrifices will be annulled - but the sacrifice of thanksgiving will not be annulled. All prayers will be annulled, but the prayer of gratitude will not be annulled. This accords with what is written [Jeremiah 33:11]: "The voice of joy and the voice of gladness, the voice of the groom and the voice of the bride, the voice of those who say 'Give thanks to the LORD of hosts' etc." - this is the prayer of gratitude. "Those who bring [the sacrifice of] thanksgiving to the House of the LORD": this is the sacrifice of thanksgiving. Thus David said: "I owe You vows and will offer you thanksgivings" [Psalms 56:13] - not "thanksgiving," but "thanksgivings," [indicating both] the thanksgiving prayer and the prayer of gratitude.
כל השונה הלכות בכל יום מובטח לו שהוא בן העולם הבא שנאמר (חבקוק ג, ו) הליכות עולם לו אל תקרי הליכות אלא הלכות
מגילה כ״ח ב:י״ז
תנא דבי אליהו כל השונה הלכות מובטח לו שהוא בן עולם הבא שנאמר (חבקוק ג, ו) הליכות עולם לו אל תקרי הליכות אלא הלכות
Megillah 28b:17
The school of Eliyahu taught: Anyone who studies halakhot every day, he is guaranteed that he is destined for the World-to-Come, as it is stated: “His ways [halikhot] are eternal” (Habakkuk 3:6): Do not read the verse as halikhot [ways]; rather, read it as halakhot. Consequently, the verse indicates that the study of thehalakhot brings one to eternal life.
3.
לֹֽא־יָרֵ֥עוּ וְלֹֽא־יַשְׁחִ֖יתוּ בְּכָל־הַ֣ר קָדְשִׁ֑י כִּֽי־מָלְאָ֣ה הָאָ֗רֶץ דֵּעָה֙ אֶת־יְהוָ֔ה כַּמַּ֖יִם לַיָּ֥ם מְכַסִּֽים׃ (פ)
In all of My sacred mount Nothing evil or vile shall be done; For the land shall be filled with devotion to the LORD As water covers the sea.
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