Bullet Points:
Korach, Moses' cousin, along with Dathan, Abiram, and On incite a rebellion challenging the leadership of Moses and contesting the status of Kohein Gadol to Aaron---along with 250 other respected leaders of the Israelite community.
They accuse Moses and Aaron of acting "holier" than the others.
Moses instructs them to bring offerings to the mishkan / sanctuary the next day and that God will demonstrate who will be trusted as leader of the community. They offer incense (ketoret) to prove their worthiness to be kohanim.
The next morning, the rebels are punished, some by being 'swallowed' by the earth itself, some by fire or plague. Moses and Aaron are accused of bringing death upon the community.
A subsequent plague is stopped by Aaron’s offering of ketoret. Aaron’s staff miraculously blossoms and brings forth almonds, to prove that his designation as high priest is divinely ordained.
God again (as in last week's parsha) threatens to destroy the entire people. G‑d commands that a terumah (“uplifting”) from each crop of grain, wine and oil, as well as all firstborn sheep and cattle, and other specified gifts, be given to the kohanim (priests).
Moses orders Aaron to place an offering on the altar.
Moses organizes the kohanim to be headed by Aaron and his descendants. They and the Levites are responsible for all gifts / offerings to the mishkan.
(א) מִ֭שְׁלֵי שְׁלֹמֹ֣ה בֶן־דָּוִ֑ד מֶ֝֗לֶךְ יִשְׂרָאֵֽל׃ (ב) לָדַ֣עַת חׇכְמָ֣ה וּמוּסָ֑ר לְ֝הָבִ֗ין אִמְרֵ֥י בִינָֽה׃
(1) The proverbs of Solomon son of David, king of Israel: (2) For learning wisdom and discipline; For understanding words of discernment;
...certain prerequisites are needed before beginning a musar program. These prerequisites include the ability to engage in honest introspection, a passion for the truth no matter how uncomfortable the truth may be and a sincere commitment to grow and advance spiritually. ~ Rabbi Baruch Meir Levin
For the Holy One, Blessed be He, who is Truth, draws near to those who call upon Hashem in truth. And what is meant by, "Who calls upon Hashem in truth?" This refers to those who cleanse their hearts of everything in the world, and draw near to the Holy One, Blessed be Hashem, alone; and whose mind continually strengthens itself to cling to the supernal light; and who directs their thoughts toward that desire always. And this is what a person can attain when sitting alone and studying, and for this reason every pious person should often separate himself and sit alone... ~Orchot Tzadikkim, 23:4 [trans.RS]
The last verses from Sh'lach, the previous parsha:
(לז) וַיֹּ֥אמֶר יהוה אֶל־מֹשֶׁ֥ה לֵּאמֹֽר׃ (לח) דַּבֵּ֞ר אֶל־בְּנֵ֤י יִשְׂרָאֵל֙ וְאָמַרְתָּ֣ אֲלֵהֶ֔ם וְעָשׂ֨וּ לָהֶ֥ם צִיצִ֛ת עַל־כַּנְפֵ֥י בִגְדֵיהֶ֖ם לְדֹרֹתָ֑ם וְנָ֥תְנ֛וּ עַל־צִיצִ֥ת הַכָּנָ֖ף פְּתִ֥יל תְּכֵֽלֶת׃ (לט) וְהָיָ֣ה לָכֶם֮ לְצִיצִת֒ וּרְאִיתֶ֣ם אֹת֗וֹ וּזְכַרְתֶּם֙ אֶת־כׇּל־מִצְוֺ֣ת יהוה וַעֲשִׂיתֶ֖ם אֹתָ֑ם וְלֹֽא־תָת֜וּרוּ אַחֲרֵ֤י לְבַבְכֶם֙ וְאַחֲרֵ֣י עֵֽינֵיכֶ֔ם אֲשֶׁר־אַתֶּ֥ם זֹנִ֖ים אַחֲרֵיהֶֽם׃ (מ) לְמַ֣עַן תִּזְכְּר֔וּ וַעֲשִׂיתֶ֖ם אֶת־כׇּל־מִצְוֺתָ֑י וִהְיִיתֶ֥ם קְדֹשִׁ֖ים לֵאלֹֽהֵיכֶֽם׃ (מא) אֲנִ֞י יהוה אֱלֹֽהֵיכֶ֗ם אֲשֶׁ֨ר הוֹצֵ֤אתִי אֶתְכֶם֙ מֵאֶ֣רֶץ מִצְרַ֔יִם לִהְי֥וֹת לָכֶ֖ם לֵאלֹהִ֑ים אֲנִ֖י יהוה אֱלֹהֵיכֶֽם׃ {פ}
(37) יהוה said to Moses as follows: (38) Speak to the Israelite people and instruct them to make for themselves fringes on the corners of their garments throughout the ages; let them attach a cord of blue to the fringe at each corner. (39) That shall be your fringe; look at it and recall all the commandments of יהוה and observe them, so that you do not follow your heart and eyes in your lustful urge. (40) Thus you shall be reminded to observe all My commandments and to be holy to your God. (41) I יהוה am your God, who brought you out of the land of Egypt to be your God: I, your God יהוה.
(Numb. 16:1:) “Now Korah […] took.” What is written above the matter (in Numb. 15:38)? “Speak unto the Children of Israel and tell them to make tassels (zizit) for themselves.’” Korah quickly said to Moses, “In the case of a prayer shawl (tallit) which is all blue, what is the rule about it being exempt from [having] the tassel?” Moses said to him, “[Such a prayer shawl] is required to have the tassels.” Korah said to him, “Would not a prayer shawl which is all blue exempt itself, when four [blue] threads exempt it? In the case of a house which is full of [scriptural] books, what is the rule about it being exempt it from [having] the mezuzah (which contains only two passages of scripture)?” [Moses] said to him, “[Such a house] is required to have the mezuzah.” [Korah] said to him, “Since the whole Torah has two hundred and seventy-five parashiot in it and they do not exempt the house [from having the mezuzah], would the two parashiot which are in the mezuzah exempt the house?” [He also] said to him, “These are things about which you have not been commanded. Rather you are inventing them [by taking them] out of your own heart.” ~Midrash Tanhuma, Korach 2
וַיִּקַּ֣ח קֹ֔רַח בֶּן־יִצְהָ֥ר בֶּן־קְהָ֖ת בֶּן־לֵוִ֑י וְדָתָ֨ן וַאֲבִירָ֜ם בְּנֵ֧י אֱלִיאָ֛ב וְא֥וֹן בֶּן־פֶּ֖לֶת בְּנֵ֥י רְאוּבֵֽן׃ וַיָּקֻ֙מוּ֙ לִפְנֵ֣י מֹשֶׁ֔ה וַאֲנָשִׁ֥ים מִבְּנֵֽי־יִשְׂרָאֵ֖ל חֲמִשִּׁ֣ים וּמָאתָ֑יִם נְשִׂיאֵ֥י עֵדָ֛ה קְרִאֵ֥י מוֹעֵ֖ד אַנְשֵׁי־שֵֽׁם׃ וַיִּֽקָּהֲל֞וּ עַל־מֹשֶׁ֣ה וְעַֽל־אַהֲרֹ֗ן וַיֹּאמְר֣וּ אֲלֵהֶם֮ רַב־לָכֶם֒ כִּ֤י כׇל־הָֽעֵדָה֙ כֻּלָּ֣ם קְדֹשִׁ֔ים וּבְתוֹכָ֖ם יהוה וּמַדּ֥וּעַ תִּֽתְנַשְּׂא֖וּ עַל־קְהַ֥ל יהוה׃
Now Korah, son of Izhar son of Kohath son of Levi, betook himself, along with Dathan and Abiram sons of Eliab, and On son of Peleth—descendants of Reuben — to rise up against Moses, together with two hundred and fifty Israelites, chieftains of the community, chosen in the assembly, men of repute. They combined against Moses and Aaron and said to them, “You have gone too far! For all the community are holy, all of them, and יהוה is in their midst. Why then do you raise yourselves above יהוה’s congregation?”
(16:3) Korach said to them: All heard at Sinai the commandment, “I am the L‑rd your G‑d”! If you alone had heard it while they had not, you could have claimed superiority. But now that they have all heard it, “why do you raise yourselves above the congregation of G‑d?” ~Rashi; Midrash Rabba
The name Korach קֹרַח offers a hint as to his personality. The same letters form the Hebrew word kerach which means ice. Some take this to mean that Korach's approach to serving Hashem was with logic, reason.
וַיִּשְׁמַ֣ע מֹשֶׁ֔ה וַיִּפֹּ֖ל עַל־פָּנָֽיו׃
When Moses heard this, he fell on his face.
So it was with Moses. When Israel had sinned in connection with the golden calf, “Moses besought G‑d” (Exodus 32:11). When “the people were as murmurers,” then “Moses prayed” (Numbers 11:1–2). In connection with the spies, “Moses said unto G‑d: ‘When Egypt shall hear . . .’” (ibid. 14:13). When the dissension of Korach broke out, he said: How many times can I impose myself on G‑d? So “when Moses heard it, he fell upon his face.” ~Midrash Rabbah; Rashi
This is in response to those who wonder why On is not listed among those who died....
And On the son of Peleth (16:1)
Said Rav: On the son of Peleth was saved by his wife. She said to him, “What matters it to you? Whether the one remains leader or the other becomes leader, you will be but a follower.” Said he: “But what can I do? I have taken part in their counsel, and they have sworn me to be with them.” . . . She said: “Sit here, and I will save you.” She gave him wine to drink, intoxicated him, and put him to bed within [the tent]. Then she sat down at the entrance and loosened her hair. Whoever came [to summon him] saw her and retreated.
Meanwhile, Korach’s wife joined in and said to him: “See what Moses has done! He himself has become king; his brother he appointed high priest; his brother’s sons he has made the vice–high priests. If terumah is brought, he decrees: Let it be for the priest. If the tithe is brought, which belongs to you [i.e., to the Levite], he orders: Give a tenth part thereof to the priest. Moreover, he has had your hair cut off (cf. Numbers 8:7) and makes sport of you as though you were dirt . . . for he was jealous of your hair.” Said he to her, “But he has done likewise!” She replied, “Since all the greatness was his, he said also, ‘Let me die with the Philistines’ . . .”
Thus it is written, “A wise woman builds her house” (Proverbs 14:1)—this refers to the wife of On the son of Peleth; “but the foolish woman destroys it with her hands” (ibid.)—this refers to Korach’s wife. ~Talmud, Sanhedrin 109b
וַיְדַבֵּ֨ר אֶל־קֹ֜רַח וְאֶֽל־כׇּל־עֲדָתוֹ֮ לֵאמֹר֒ בֹּ֠קֶר וְיֹדַ֨ע יהוה אֶת־אֲשֶׁר־ל֛וֹ וְאֶת־הַקָּד֖וֹשׁ וְהִקְרִ֣יב אֵלָ֑יו וְאֵ֛ת אֲשֶׁ֥ר יִבְחַר־בּ֖וֹ יַקְרִ֥יב אֵלָֽיו׃ זֹ֖את עֲשׂ֑וּ קְחוּ־לָכֶ֣ם מַחְתּ֔וֹת קֹ֖רַח וְכׇל־עֲדָתֽוֹ׃ וּתְנ֣וּ בָהֵ֣ן ׀ אֵ֡שׁ וְשִׂ֩ימוּ֩ עֲלֵיהֶ֨ן ׀ קְטֹ֜רֶת לִפְנֵ֤י יהוה מָחָ֔ר וְהָיָ֗ה הָאִ֛ישׁ אֲשֶׁר־יִבְחַ֥ר יהוה ה֣וּא הַקָּד֑וֹשׁ רַב־לָכֶ֖ם בְּנֵ֥י לֵוִֽי׃
Then he spoke to Korah and all his company, saying, “Come morning, יהוה will make known who is [God’s] and who is holy by granting direct access; the one whom [God] has chosen will be granted access. Do this: You, Korah and all your band, take fire pans, and tomorrow put fire in them and lay incense on them before יהוה. Then the candidate whom יהוה chooses, he shall be the holy one. You have gone too far, sons of Levi!”
וַיֹּ֥אמֶר מֹשֶׁ֖ה אֶל־קֹ֑רַח שִׁמְעוּ־נָ֖א בְּנֵ֥י לֵוִֽי׃ הַמְעַ֣ט מִכֶּ֗ם כִּֽי־הִבְדִּיל֩ אֱלֹהֵ֨י יִשְׂרָאֵ֤ל אֶתְכֶם֙ מֵעֲדַ֣ת יִשְׂרָאֵ֔ל לְהַקְרִ֥יב אֶתְכֶ֖ם אֵלָ֑יו לַעֲבֹ֗ד אֶת־עֲבֹדַת֙ מִשְׁכַּ֣ן יהוה וְלַעֲמֹ֛ד לִפְנֵ֥י הָעֵדָ֖ה לְשָׁרְתָֽם׃ וַיַּקְרֵב֙ אֹֽתְךָ֔ וְאֶת־כׇּל־אַחֶ֥יךָ בְנֵי־לֵוִ֖י אִתָּ֑ךְ וּבִקַּשְׁתֶּ֖ם גַּם־כְּהֻנָּֽה׃ לָכֵ֗ן אַתָּה֙ וְכׇל־עֲדָ֣תְךָ֔ הַנֹּעָדִ֖ים עַל־יהוה וְאַהֲרֹ֣ן מַה־ה֔וּא כִּ֥י (תלונו) [תַלִּ֖ינוּ] עָלָֽיו׃
Moses said further to Korah, “Hear me, sons of Levi. Is it not enough for you that the God of Israel has set you apart from the community of Israel and given you direct access, to perform the duties of יהוה’s Tabernacle and to minister to the community and serve them? Now that [God] has advanced you and all your fellow Levites with you, do you seek the priesthood too? Truly, it is against יהוה that you and all your company have banded together. For who is Aaron that you should rail against him?”
(יב) וַיִּשְׁלַ֣ח מֹשֶׁ֔ה לִקְרֹ֛א לְדָתָ֥ן וְלַאֲבִירָ֖ם בְּנֵ֣י אֱלִיאָ֑ב וַיֹּאמְר֖וּ לֹ֥א נַעֲלֶֽה׃ (יג) הַמְעַ֗ט כִּ֤י הֶֽעֱלִיתָ֙נוּ֙ מֵאֶ֨רֶץ זָבַ֤ת חָלָב֙ וּדְבַ֔שׁ לַהֲמִיתֵ֖נוּ בַּמִּדְבָּ֑ר כִּֽי־תִשְׂתָּרֵ֥ר עָלֵ֖ינוּ גַּם־הִשְׂתָּרֵֽר׃ (יד) אַ֡ף לֹ֣א אֶל־אֶ֩רֶץ֩ זָבַ֨ת חָלָ֤ב וּדְבַשׁ֙ הֲבִ֣יאֹתָ֔נוּ וַתִּ֨תֶּן־לָ֔נוּ נַחֲלַ֖ת שָׂדֶ֣ה וָכָ֑רֶם הַעֵינֵ֞י הָאֲנָשִׁ֥ים הָהֵ֛ם תְּנַקֵּ֖ר לֹ֥א נַעֲלֶֽה׃
(12) Moses sent for Dathan and Abiram, sons of Eliab; but they said, “We will not come! (13) Is it not enough that you brought us from a land flowing with milk and honey to have us die in the wilderness, that you would also lord it over us? (14) Even if you had brought us to a land flowing with milk and honey, and given us possession of fields and vineyards, should you gouge out the eyes of those involved? We will not come!”
(טו) וַיִּ֤חַר לְמֹשֶׁה֙ מְאֹ֔ד וַיֹּ֙אמֶר֙ אֶל־יהוה אַל־תֵּ֖פֶן אֶל־מִנְחָתָ֑ם לֹ֠א חֲמ֨וֹר אֶחָ֤ד מֵהֶם֙ נָשָׂ֔אתִי וְלֹ֥א הֲרֵעֹ֖תִי אֶת־אַחַ֥ד מֵהֶֽם׃ (טז) וַיֹּ֤אמֶר מֹשֶׁה֙ אֶל־קֹ֔רַח אַתָּה֙ וְכׇל־עֲדָ֣תְךָ֔ הֱי֖וּ לִפְנֵ֣י יהוה אַתָּ֥ה וָהֵ֛ם וְאַהֲרֹ֖ן מָחָֽר׃ (יז) וּקְח֣וּ ׀ אִ֣ישׁ מַחְתָּת֗וֹ וּנְתַתֶּ֤ם עֲלֵיהֶם֙ קְטֹ֔רֶת וְהִקְרַבְתֶּ֞ם לִפְנֵ֤י יהוה אִ֣ישׁ מַחְתָּת֔וֹ חֲמִשִּׁ֥ים וּמָאתַ֖יִם מַחְתֹּ֑ת וְאַתָּ֥ה וְאַהֲרֹ֖ן אִ֥ישׁ מַחְתָּתֽוֹ׃ (יח) וַיִּקְח֞וּ אִ֣ישׁ מַחְתָּת֗וֹ וַיִּתְּנ֤וּ עֲלֵיהֶם֙ אֵ֔שׁ וַיָּשִׂ֥ימוּ עֲלֵיהֶ֖ם קְטֹ֑רֶת וַֽיַּעַמְד֗וּ פֶּ֛תַח אֹ֥הֶל מוֹעֵ֖ד וּמֹשֶׁ֥ה וְאַהֲרֹֽן׃ (יט) וַיַּקְהֵ֨ל עֲלֵיהֶ֥ם קֹ֙רַח֙ אֶת־כׇּל־הָ֣עֵדָ֔ה אֶל־פֶּ֖תַח אֹ֣הֶל מוֹעֵ֑ד וַיֵּרָ֥א כְבוֹד־יהוה אֶל־כׇּל־הָעֵדָֽה׃ {ס}
(15) Moses was much aggrieved and he said to יהוה, “Pay no regard to their oblation. I have not taken the ass of any one of them, nor have I wronged any one of them.” (16) And Moses said to Korah, “Tomorrow, you and all your company appear before יהוה, you and they and Aaron. (17) Each of you take your fire pan and lay incense on it, and each of you bring that fire pan before יהוה, two hundred and fifty fire pans; you and Aaron also [bring] your fire pans.” (18) They each took their fire pan, put fire in it, laid incense on it, and took a place at the entrance of the Tent of Meeting, as did Moses and Aaron. (19) Korah gathered the whole community against them at the entrance of the Tent of Meeting. Then the Presence of יהוה appeared to the whole community,
(כ) וַיְדַבֵּ֣ר יהוה אֶל־מֹשֶׁ֥ה וְאֶֽל־אַהֲרֹ֖ן לֵאמֹֽר׃ (כא) הִבָּ֣דְל֔וּ מִתּ֖וֹךְ הָעֵדָ֣ה הַזֹּ֑את וַאֲכַלֶּ֥ה אֹתָ֖ם כְּרָֽגַע׃ (כב) וַיִּפְּל֤וּ עַל־פְּנֵיהֶם֙ וַיֹּ֣אמְר֔וּ אֵ֕ל אֱלֹהֵ֥י הָרוּחֹ֖ת לְכׇל־בָּשָׂ֑ר הָאִ֤ישׁ אֶחָד֙ יֶחֱטָ֔א וְעַ֥ל כׇּל־הָעֵדָ֖ה תִּקְצֹֽף׃ {ס} (כג) וַיְדַבֵּ֥ר יהוה אֶל־מֹשֶׁ֥ה לֵּאמֹֽר׃ (כד) דַּבֵּ֥ר אֶל־הָעֵדָ֖ה לֵאמֹ֑ר הֵֽעָלוּ֙ מִסָּבִ֔יב לְמִשְׁכַּן־קֹ֖רַח דָּתָ֥ן וַאֲבִירָֽם׃ (כה) וַיָּ֣קׇם מֹשֶׁ֔ה וַיֵּ֖לֶךְ אֶל־דָּתָ֣ן וַאֲבִירָ֑ם וַיֵּלְכ֥וּ אַחֲרָ֖יו זִקְנֵ֥י יִשְׂרָאֵֽל׃ (כו) וַיְדַבֵּ֨ר אֶל־הָעֵדָ֜ה לֵאמֹ֗ר ס֣וּרוּ נָ֡א מֵעַל֩ אׇהֳלֵ֨י הָאֲנָשִׁ֤ים הָֽרְשָׁעִים֙ הָאֵ֔לֶּה וְאַֽל־תִּגְּע֖וּ בְּכׇל־אֲשֶׁ֣ר לָהֶ֑ם פֶּן־תִּסָּפ֖וּ בְּכׇל־חַטֹּאתָֽם׃ (כז) וַיֵּעָל֗וּ מֵעַ֧ל מִשְׁכַּן־קֹ֛רַח דָּתָ֥ן וַאֲבִירָ֖ם מִסָּבִ֑יב וְדָתָ֨ן וַאֲבִירָ֜ם יָצְא֣וּ נִצָּבִ֗ים פֶּ֚תַח אׇֽהֳלֵיהֶ֔ם וּנְשֵׁיהֶ֥ם וּבְנֵיהֶ֖ם וְטַפָּֽם׃ (כח) וַיֹּ֘אמֶר֮ מֹשֶׁה֒ בְּזֹאת֙ תֵּֽדְע֔וּן כִּֽי־יהוה שְׁלָחַ֔נִי לַעֲשׂ֕וֹת אֵ֥ת כׇּל־הַֽמַּעֲשִׂ֖ים הָאֵ֑לֶּה כִּי־לֹ֖א מִלִּבִּֽי׃ (כט) אִם־כְּמ֤וֹת כׇּל־הָֽאָדָם֙ יְמֻת֣וּן אֵ֔לֶּה וּפְקֻדַּת֙ כׇּל־הָ֣אָדָ֔ם יִפָּקֵ֖ד עֲלֵיהֶ֑ם לֹ֥א יהוה שְׁלָחָֽנִי׃ (ל) וְאִם־בְּרִיאָ֞ה יִבְרָ֣א יהוה וּפָצְתָ֨ה הָאֲדָמָ֤ה אֶת־פִּ֙יהָ֙ וּבָלְעָ֤ה אֹתָם֙ וְאֶת־כׇּל־אֲשֶׁ֣ר לָהֶ֔ם וְיָרְד֥וּ חַיִּ֖ים שְׁאֹ֑לָה וִֽידַעְתֶּ֕ם כִּ֧י נִֽאֲצ֛וּ הָאֲנָשִׁ֥ים הָאֵ֖לֶּה אֶת־יהוה׃ (לא) וַיְהִי֙ כְּכַלֹּת֔וֹ לְדַבֵּ֕ר אֵ֥ת כׇּל־הַדְּבָרִ֖ים הָאֵ֑לֶּה וַתִּבָּקַ֥ע הָאֲדָמָ֖ה אֲשֶׁ֥ר תַּחְתֵּיהֶֽם׃ (לב) וַתִּפְתַּ֤ח הָאָ֙רֶץ֙ אֶת־פִּ֔יהָ וַתִּבְלַ֥ע אֹתָ֖ם וְאֶת־בָּתֵּיהֶ֑ם וְאֵ֤ת כׇּל־הָאָדָם֙ אֲשֶׁ֣ר לְקֹ֔רַח וְאֵ֖ת כׇּל־הָרְכֽוּשׁ׃ (לג) וַיֵּ֨רְד֜וּ הֵ֣ם וְכׇל־אֲשֶׁ֥ר לָהֶ֛ם חַיִּ֖ים שְׁאֹ֑לָה וַתְּכַ֤ס עֲלֵיהֶם֙ הָאָ֔רֶץ וַיֹּאבְד֖וּ מִתּ֥וֹךְ הַקָּהָֽל׃ (לד) וְכׇל־יִשְׂרָאֵ֗ל אֲשֶׁ֛ר סְבִיבֹתֵיהֶ֖ם נָ֣סוּ לְקֹלָ֑ם כִּ֣י אָֽמְר֔וּ פֶּן־תִּבְלָעֵ֖נוּ הָאָֽרֶץ׃ (לה) וְאֵ֥שׁ יָצְאָ֖ה מֵאֵ֣ת יהוה וַתֹּ֗אכַל אֵ֣ת הַחֲמִשִּׁ֤ים וּמָאתַ֙יִם֙ אִ֔ישׁ מַקְרִיבֵ֖י הַקְּטֹֽרֶת׃ {ס}
(20) and יהוה spoke to Moses and Aaron, saying, (21) “Stand back from this community that I may annihilate them in an instant!” (22) But they fell on their faces and said, “O God, Source of the breath of all flesh! When one member sins, will You be wrathful with the whole community?” (23) יהוה spoke to Moses, saying, (24) “Speak to the community and say: Withdraw from about the abodes of Korah, Dathan, and Abiram.” (25) Moses rose and went to Dathan and Abiram, the elders of Israel following him. (26) He addressed the community, saying, “Move away from the tents of these wicked men and touch nothing that belongs to them, lest you be wiped out for all their sins.” (27) So they withdrew from about the abodes of Korah, Dathan, and Abiram. Now Dathan and Abiram had come out and they stood at the entrance of their tents, with their wives, their adult children, and their little ones. (28) And Moses said, “By this you shall know that it was יהוה who sent me to do all these things; that they are not of my own devising: (29) if these people’s death is that of all humankind, if their lot is humankind’s common fate, it was not יהוה who sent me. (30) But if יהוה brings about something unheard-of, so that the ground opens its mouth and swallows them up with all that belongs to them, and they go down alive into Sheol, you shall know that those involved have spurned יהוה. Scarcely had he finished speaking all these words when the ground under them burst asunder, (32) and the earth opened its mouth and swallowed them up with their households, all Korah’s people and all their possessions. (33) They went down alive into Sheol, with all that belonged to them; the earth closed over them and they vanished from the midst of the congregation. (34) All Israel around them fled at their shrieks, for they said, “The earth might swallow us!” (35) And a fire went forth from יהוה and consumed the two hundred and fifty contestants offering the incense.
16:30 - "...Why would it not have sufficed for them to simply die on the spot at the command of Moshe? We would suggest that the problem here was of coping with the challenge that was created by the cunning manipulation of Korach....Korach did not deny that Hashem had commanded all that Moshe had taught and done...[but] said however, that Hashem commanded all this in response to Moshe...No human, no matter how great, can tell Hashem to create, or to make a new creation..The assertion that Torah was given as subjective to a human mind, as Korach claimed, or subjective to any generation, is an attack on the eternity of Torah. ~Rabbi Yechiel Perr, Shoshanas Ha'amikim
There were two distinct groups in Korach’s following. There were the 250 “leaders of the community, of those called to the assembly, men of distinction” who were driven by the aspiration to attain the ultimate in closeness to G‑d through the offering of the ketoret. But Korach’s camp also included a mob of rabble-rousers, including the infamous Dathan and Aviram, jealous of Moses and discontent with the “burden” of the divine commandments he had introduced into their lives.
The difference between these two groups is illustrated by the manner in which they met their tragic end. The two hundred and fifty men who offered the ketoret were consumed by a heavenly fire, while Dathan and Aviram and their ilk were swallowed up by the earth. As for Korach himself, the Midrash tells us that since he was responsible for both these groups, he received both penalties: his soul was consumed by fire, and his body was swallowed by the earth. ~The Lubavitcher Rebbe
(יז) כָּל מַחֲלוֹקֶת שֶׁהִיא לְשֵׁם שָׁמַיִם, סוֹפָהּ לְהִתְקַיֵּם. וְשֶׁאֵינָהּ לְשֵׁם שָׁמַיִם, אֵין סוֹפָהּ לְהִתְקַיֵּם. אֵיזוֹ הִיא מַחֲלוֹקֶת שֶׁהִיא לְשֵׁם שָׁמַיִם, זוֹ מַחֲלוֹקֶת הִלֵּל וְשַׁמַּאי. וְשֶׁאֵינָהּ לְשֵׁם שָׁמַיִם, זוֹ מַחֲלוֹקֶת קֹרַח וְכָל עֲדָתוֹ:
(17) Every argument that is [for the sake of] heaven's name, it is destined to endure. But if it is not [for the sake of] heaven's name -- it is not destined to endure. What [is an example of an argument for the sake of] heaven's name? The argument of Hillel and Shammai. What [is an example of an argument not for the sake of] heaven's name? The argument of Korach and all of his followers.
(טז) וַיְקַנְא֣וּ לְ֭מֹשֶׁה בַּֽמַּחֲנֶ֑ה לְ֝אַהֲרֹ֗ן קְד֣וֹשׁ יהוה׃ (יז) תִּפְתַּח־אֶ֭רֶץ וַתִּבְלַ֣ע דָּתָ֑ן וַ֝תְּכַ֗ס עַל־עֲדַ֥ת אֲבִירָֽם׃ (יח) וַתִּבְעַר־אֵ֥שׁ בַּעֲדָתָ֑ם לֶ֝הָבָ֗ה תְּלַהֵ֥ט רְשָׁעִֽים׃
(16) There was envy of Moses in the camp, and of Aaron, the holy one of the LORD. (17) The earth opened up and swallowed Dathan, closed over the party of Abiram. (18) A fire blazed among their party, a flame that consumed the wicked.
Note that for the Rabbis of the Talmud, a Makhloket l'shem shamayim, an argument for the sake of heaven, is not one in which anyone gives in, nor one where one refused to hear the other side. It is a disagreement in which people are polite and in which both sides are open to hearing the other side. In order to truly place others' words before our own, as Beit Hillel did, we much listen to them and be able to restate them before we respond to them.
Leon Wieseltier, The Argumentative Jew, Jewish Review of Books,
Learning to live with disagreement, moreover, is a way of learning to live with each other. Etymologically, the term machloket refers to separation and division, but the culture of machloket is not in itself separatist and divisive....But beyond those general axioms, the really remarkable feature of the Jewish tradition of machloket is that it is itself a basis for community. The community of contention, the contentious community, is not as paradoxical as it may seem. The parties to a disagreement are members of the disagreement; they belong to the group that wrestles together with the same perplexity, and they wrestle together for the sake of the larger community to which they all belong, the community that needs to know how Jews should behave and live. A quarrel is evidence of coexistence. The rabbinical tradition is full of rival authorities and rival schools—it owes a lot of its excitement to those grand and even bitter altercations—but the rivalries play themselves out within the unified framework of the shared search. There is dissent without dissension, and yet things change. Intellectual discord, if it is practiced with methodological integrity, is compatible with social peace.
(א) וַיְדַבֵּ֥ר יהוה אֶל־מֹשֶׁ֥ה לֵּאמֹֽר׃ (ב) אֱמֹ֨ר אֶל־אֶלְעָזָ֜ר בֶּן־אַהֲרֹ֣ן הַכֹּהֵ֗ן וְיָרֵ֤ם אֶת־הַמַּחְתֹּת֙ מִבֵּ֣ין הַשְּׂרֵפָ֔ה וְאֶת־הָאֵ֖שׁ זְרֵה־הָ֑לְאָה כִּ֖י קָדֵֽשׁוּ׃ (ג) אֵ֡ת מַחְתּוֹת֩ הַֽחַטָּאִ֨ים הָאֵ֜לֶּה בְּנַפְשֹׁתָ֗ם וְעָשׂ֨וּ אֹתָ֜ם רִקֻּעֵ֤י פַחִים֙ צִפּ֣וּי לַמִּזְבֵּ֔חַ כִּֽי־הִקְרִיבֻ֥ם לִפְנֵֽי־יהוה וַיִּקְדָּ֑שׁוּ וְיִֽהְי֥וּ לְא֖וֹת לִבְנֵ֥י יִשְׂרָאֵֽל׃ (ד) וַיִּקַּ֞ח אֶלְעָזָ֣ר הַכֹּהֵ֗ן אֵ֚ת מַחְתּ֣וֹת הַנְּחֹ֔שֶׁת אֲשֶׁ֥ר הִקְרִ֖יבוּ הַשְּׂרֻפִ֑ים וַֽיְרַקְּע֖וּם צִפּ֥וּי לַמִּזְבֵּֽחַ׃ (ה) זִכָּר֞וֹן לִבְנֵ֣י יִשְׂרָאֵ֗ל לְ֠מַ֠עַן אֲשֶׁ֨ר לֹֽא־יִקְרַ֜ב אִ֣ישׁ זָ֗ר אֲ֠שֶׁ֠ר לֹ֣א מִזֶּ֤רַע אַהֲרֹן֙ ה֔וּא לְהַקְטִ֥יר קְטֹ֖רֶת לִפְנֵ֣י יהוה וְלֹֽא־יִהְיֶ֤ה כְקֹ֙רַח֙ וְכַ֣עֲדָת֔וֹ כַּאֲשֶׁ֨ר דִּבֶּ֧ר יהוה בְּיַד־מֹשֶׁ֖ה לֽוֹ׃ {פ}
(1) יהוה spoke to Moses, saying: (2) Order Eleazar son of Aaron the priest to remove the fire pans—for they have become sacred—from among the charred remains; and scatter the coals abroad. (3) [Remove] the fire pans of those who have sinned at the cost of their lives, and let them be made into hammered sheets as plating for the altar—for once they have been used for offering to יהוה, they have become sacred—and let them serve as a warning to the people of Israel. (4) Eleazar the priest took the copper fire pans which had been used for offering by those who died in the fire; and they were hammered into plating for the altar, (5) as יהוה had ordered him through Moses. It was to be a reminder to the Israelites, so that no outsider—one not of Aaron’s offspring—should presume to offer incense before יהוה and suffer the fate of Korah and his band.
The disappearance of On
מרגלים אין להם חלק לעולם הבא שנאמר (במדבר יד, לז) וימותו האנשים מוציאי דבת הארץ רעה במגפה וימותו בעולם הזה במגפה לעולם הבא: עדת קרח אין להם חלק לעולם הבא שנאמר (במדבר טז, לג) ותכס עליהם הארץ בעולם הזה ויאבדו מתוך הקהל לעולם הבא דברי ר"ע רבי אליעזר אומר עליהם אמר הכתוב (שמואל א ב, ו) יהוה ממית ומחיה מוריד שאול ויעל: ת"ר עדת קרח אין להם חלק לעולם הבא שנאמר ותכס עליהם הארץ בעולם הזה ויאבדו מתוך הקהל לעולם הבא דברי רבי עקיבא רבי יהודה בן בתירא אומר הרי הן כאבידה המתבקשת שנאמר (תהלים קיט, קעו) תעיתי כשה אובד בקש עבדך כי מצותיך לא שכחתי: ויקח [קרח] אמר ריש לקיש שלקח מקח רע לעצמו קרח שנעשה קרחה בישראל בן יצהר בן שהרתיח עליו את כל העולם כצהרים בן קהת בן שהקהה שיני מולידיו בן לוי בן שנעשה לויה בגיהנם וליחשוב נמי בן יעקב בן שעקב עצמו לגיהנם אמר רב שמואל בר רב יצחק יעקב ביקש רחמים על עצמו שנאמר (בראשית מט, ו) בסודם אל תבא נפשי ובקהלם אל תחד כבודי בסודם אל תבא נפשי אלו מרגלים ובקהלם אל תחד כבודי זה עדת קרח דתן שעבר על דת אל אבירם שאיבר עצמו מעשות תשובה ואון שישב באנינות פלת שנעשו לו פלאות בן ראובן בן שראה והבין אמר רב און בן פלת אשתו הצילתו אמרה ליה מאי נפקא לך מינה אי מר רבה אנת תלמידא ואי מר רבה אנת תלמידא אמר לה מאי אעביד הואי בעצה ואשתבעי לי בהדייהו אמרה ליה ידענא דכולה כנישתא קדישתא נינהו דכתיב (במדבר טז, ג) כי כל העדה כולם קדושים אמרה ליה תוב דאנא מצילנא לך אשקיתיה חמרא וארויתיה ואגניתיה גואי אותבה על בבא וסתרתה למזיה כל דאתא חזיה הדר אדהכי והכי אבלעו להו
§ The mishna teaches: The spies who spread an evil report of their visit to Canaan have no share in the World-to-Come, as it is stated: “And those men who spread the evil report about the land died by plague before the Lord” (Numbers 14:37). “And…died” indicates in this world, and “by plague” indicates for the World-to-Come. The members of the assembly of Korah have no share in the World-to-Come, as it is stated: “And the earth closed upon them” (Numbers 16:33), meaning in this world, and also: “And they perished from among the assembly” (Numbers 16:33), meaning in the World-to-Come; this is the statement of Rabbi Akiva. Rabbi Eliezer says: About the assembly of Korah, the verse states: “The Lord kills and makes alive; He lowers to the grave, and raises” (I Samuel 2:6), indicating that the assembly of Korah has a share in the World-to-Come. The Sages taught in a baraita (Tosefta 13:9): The members of the assembly of Korah have no share in the World-to-Come, as it is stated: “And the earth closed upon them” (Numbers 16:33), meaning in this world, and also: “And they perished from among the assembly” (Numbers 16:33), meaning in the World-to-Come; this is the statement of Rabbi Akiva. Rabbi Yehuda ben Beteira says: Although it says that they perished, they are like a lost item that is sought, ultimately found, and rehabilitated, as it is stated: “I have gone astray like a lost sheep; seek out your servant, for I do not forget your mitzvot” (Psalms 119:176). Apropos Korah, the Gemara proceeds to interpret the verses written concerning him. “And Korah, son of Izhar, son of Kohath, son of Levi, took [vayikkaḥ]” (Numbers 16:1), Reish Lakish says: He purchased [lakaḥ] a bad acquisition for himself, as through his actions he drove himself from the world. “Korah” alludes to the fact that because of him a void [korḥa] was created in the children of Israel. “Son of Izhar,” is referring to a son who incited the wrath of the entire world upon him like the heat of the afternoon [tzohorayim]. “Son of Kohath,” is referring to a son who blunted [hik’ha] the teeth of his parents, i.e., he shamed them with his conduct. “Son of Levi,” is referring to a son who became an escort [levaya] in Gehenna. The Gemara asks: But if Korah’s lineage is being interpreted disparagingly, why not let the Torah also include: Son of Jacob [Ya’akov], and interpret it: A son who contorted [she’akav] himself until he reached Gehenna? Rav Shmuel bar Rav Yitzḥak says: Jacob prayed for mercy for himself that his name would not be included in the lineage of Korah, as it is stated: “Let my soul not come into their council; to their assembly let my honor not be united” (Genesis 49:6). “Let my soul not come into their council”; these are the spies. Jacob prayed that his name would not be mentioned in their regard. “To their assembly let my honor not be united”; this is referring to the assembly of Korah. The Gemara proceeds to interpret the names of Korah’s cohorts: “Dathan and Abiram, the sons of Eliab, and On, the son of Peleth, sons of Reuben” (Numbers 16:1). “Dathan” is one who violated the precepts [dat] of God. “Abiram” is one who braced [iber] himself from repenting. “And On” indicates one who sat in acute mourning [aninut] over the sin that he committed, and he repented and was spared. “Peleth” is one for whom wonders [pelaot] were performed. Son of Reuben [Reuven], is a son who saw and understood [ra’a vehevin] the nature of what was transpiring and repented. Rav says: On, son of Peleth, did not repent on his own; rather, his wife saved him. She said to him: What is the difference to you? If this Master, Moses, is the great one, you are the student. And if this Master, Korah, is the great one, you are the student. Why are you involving yourself in this matter? On said to her: What shall I do? I was one of those who took counsel and I took an oath with them that I would be with them. She said to him: I know that the entire assembly is holy, as it is written: “For all the assembly is holy” (Numbers 16:3), and they observe the restrictions of modesty. She said to him: Sit, for I will save you. She gave him wine to drink and caused him to become drunk and laid him on a bed inside their tent. She sat at the entrance of the tent and exposed her hair as though she were bathing. Anyone who came and saw her stepped back. In the meantime the assembly of Korah was swallowed into the ground, and On, son of Peleth, was spared.
Genuine holiness is the altruistic striving for good for its own sake, not out of self-interest. Rav Kook, Ein Eyah vol. I, p. 104