Halakhah sa Obadias 1:21: Mishneh Torah, Shofar, Sukkah and Lulav & Mishneh Torah, Kings and Wars

We may not mention malkhiot, zikhronot and shofarot of punishment — such as [in] zikhronot, "And all flesh shall remember that, etc." (Psalms 78:39); [in] malkhiot, "with outpoured anger shall I rule over you" (Ezekiel 20:33); [and in] shofarot, "Blow the shofar on the mountain, etc." (Hosea 5:8). Nor [may we mention] the remembrance of an individual — even if it was for good — such as "Remember me, O Lord, in the desire of Your people" (Psalms 106:4); and "Remember me, my God, for the good" (Nehemiah 13:31). And recollections (pikdonot) — such as "I have surely recalled you" (Exodus 3:16) — are not the same as remembrances. But one may mention the punishment of idolatrous nations, such as "The Lord reigned, nations tremble" (Psalms 99:1); "Remember the day of Jerusalem to the Children of Edom" (Psalms 137:7); [and] "the Lord, God, will blow with the shofar, and go in the storms of the south" (Zechariah 9:14). All of these verses: "Hear Israel, the Lord, our God, the Lord is one" (Deuteronomy 6:4); "You have been shown to know" (Deuteronomy 4:35); "And you shall know today and place upon your hearts, etc." (Deuteronomy 4:39) — their content is kingship. Even though there is no mention of kingship [in them], it is surely like, "The Lord will reign forever and ever" (Exodus 15:18); [and] "And then He became King in Jeshurun, etc." (Deuteronomy 33:5).

The King Messiah will arise and re-establish the monarchy of David as it was in former times. He will build the Sanctuary and gather in the dispersed of Israel. All the earlier statutes will be restored as they once were. Sacrifices will be offered, the Sabbatical and Jubilee years will be observed, as commanded in the Torah. Anyone who does not believe in him or one who does not anticipate his coming not only denies the Prophets, but also the Torah and Moses our Teacher. For the Torah has given testimony about him saying, “And the Lord your G-d will turn your captivity and have compassion with you. He will return and gather you from all the peoples…If any of you should be dispersed at the ends of Heaven, from there G-d will gather you, from there He will fetch you. And the Lord, your G-d will bring you…” (Deut. 30:3-4). These matters are explicit in the Torah and include everything said by all the Prophets. It is even written in the Chapter of Balaam who prophesized about both the Messiahs. The first Messiah was David who saved Israel from her adversities. The final Messiah will be from his sons and will deliver Israel from the hands of the descendants of Esau. There it says, “I shall see him, but not now” (Numbers 24:17) - this refers to David; “I behold him, and not soon” (ibid.) - this is the King Messiah; “A star from Jacob shall step forth” (ibid.) - this is David; “and a scepter shall arise out of Israel” (ibid.) - this the King Messiah; “and shall smite through the corners of Moab” - this is David; and so it says, “And he smote Moab and measured them with a rope” (II Samuel 8:2); “and break down all the sons of Seth” (Numbers 24:17) - this is King Messiah of whom it says, “and his dominion shall be from sea to sea” (Zechariah 9:10); “and Edom shall be a possession” (Numbers 24:18) - this is David, as it says, “And Edom shall become slaves to David” (see II Samuel 8:6 and II Samuel 8:14); “Seir also, even his enemies, shall be a possession” (Numbers 24:18) - this is King Messiah, as it says, “And the saviors shall come upon Mount Zion to judge the mount of Esau…” (Obadiah 1:21).