(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 children, and their little ones. (28) And Moses said, “By this you shall know that it was the LORD who sent me to do all these things; that they are not of my own devising: (29) if these men die as all men do, if their lot be the common fate of all mankind, it was not the LORD who sent me. (30) But if the LORD 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 these men have spurned the LORD.” (31) 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.

.ובני קרח לא מתו , “and Korach’s sons did not die.” Our sages in Megillah 14 explain these words to mean that there was a special place reserved for them in Gehinom where they remained. The site where the swallowing occurred and where judgment of these individuals occurs is known as Gehinom. Alternatively, the sages meant the real purgatory the entrance to which is close to the point where Korach and company were swallowed. (According to Eyruvin 19 there are a total of three such portals to purgatory). We find that sons (or descendants) of Korach sang hymns in the Holy Temple as we know from Psalms 47,1 and 48,1 and others.

The sons of Korah, however, did not die.

ובני קרח לא מתו BUT THE SONS OF KORAH DID NOT DIE — They were in the plot originally, but at the moment when the rebellion broke out they had thoughts of repentance in their hearts; therefore a high spot was fenced round for them in Gehinnom and they stayed there (Sanhedrin 110a).

With regard to the verse: “And the sons of Korah did not die” (Numbers 26:11), it is taught in a baraita that in the name of our teacher, the Sages said: A place was fortified for them in Gehenna and they sat upon it and recited songs of praise. Rabba bar bar Ḥana said: One time I was walking on the path, and a certain Arab said to me: Come and I will show you those from the assembly of Korah who were swallowed. I went and I saw two fissures in the ground from which smoke was emerging. That Arab took a woolen fleece and dampened it with water and placed it on the tip of his spear and passed it over the fissures there. The fleece was singed, indicating the level of heat there. He said to me: Listen; what do you hear? And I heard that this is what they were saying: Moses and his Torah are truth, and they, referring to themselves, are liars.

(1) 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— (2) to rise up against Moses, together with two hundred and fifty Israelites, chieftains of the community, chosen in the assembly, men of repute. (3) 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 the LORD is in their midst. Why then do you raise yourselves above the LORD’s congregation?” (4) When Moses heard this, he fell on his face. (5) Then he spoke to Korah and all his company, saying, “Come morning, the LORD will make known who is His and who is holy, and will grant him access to Himself; He will grant access to the one He has chosen. (6) Do this: You, Korah and all your band, take fire pans, (7) and tomorrow put fire in them and lay incense on them before the LORD. Then the man whom the LORD chooses, he shall be the holy one. You have gone too far, sons of Levi!” (8) Moses said further to Korah, “Hear me, sons of Levi. (9) Is it not enough for you that the God of Israel has set you apart from the community of Israel and given you access to Him, to perform the duties of the LORD’s Tabernacle and to minister to the community and serve them? (10) Now that He has advanced you and all your fellow Levites with you, do you seek the priesthood too? (11) Truly, it is against the LORD that you and all your company have banded together. For who is Aaron that you should rail against him?” (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?

[Jonah said the the fish]...Show me what is in the sea and in the depths. It showed him the great river of the waters of the Ocean, as it is said, "The deep was round about me" (Jonah 2:5), and it showed him the paths of the Reed Sea through which Israel passed, as it is said, "The reeds were wrapped about my head" (ibid.); and it showed him the place whence the waves of the sea and its billows flow, as it is said, "All || thy waves and thy billows passed over me" (Jonah 2:3); and it showed him the pillars of the earth in its foundations, as it is said, "The earth with her bars for the world were by me" (Jonah 2:6); and it showed him the lowest Sheol, as it is said, "Yet hast thou brought up my life from destruction, O Lord, my God" (ibid.); and it showed him Gehinnom, as it is said, "Out of the belly of Sheol I cried, and thou didst hear my voice" (Jonah 2:2); and it showed him (what was) beneath the Temple of God, as it is said,"(I went down) to the bottom of the mountains" (Jonah 2:6). Hence we may learn that Jerusalem stands upon seven (hills), and he saw there the Eben Shethiyah (Foundation Stone) fixed in the depths. He saw there the sons of Korah standing and praying over it. They said to Jonah, Behold thou dost stand beneath the Temple of God, pray and thou wilt be answered. Forthwith Jonah said to the fish, Stand in the place where thou art standing, because I wish to pray. The fish stood (still), and Jonah began to pray before the Holy One, blessed be He, and he said: Sovereign of all the Universe ! Thou art called "the One who kills" and "the One who makes alive," behold, my soul has reached unto death, now restore me to life. He was not answered until this word came forth from his mouth, "What I have vowed I will perform" (Jonah 2:9), namely, I vowed to draw up Leviathan and to prepare it before Thee, I will perform (this) on the day of the Salvation of Israel, as it is said, "But I will sacrifice unto thee with the voice of thanksgiving" (ibid.). Forthwith the Holy One, blessed be He, hinted (to the fish) and it vomited out Jonah || upon the dry land, as it is said, "And the Lord spake unto the fish, and it vomited out Jonah upon the dry land" (Jonah 2:10).

(1) A song. A psalm of the Korahites. (2) The LORD is great and much acclaimed in the city of our God, His holy mountain— (3) fair-crested, joy of all the earth, Mount Zion, summit of Zaphon, city of the great king. (4) Through its citadels, God has made Himself known as a haven. (5) See, the kings joined forces; they advanced together. (6) At the mere sight of it they were stunned, they were terrified, they panicked; (7) they were seized there with a trembling, like a woman in the throes of labor, (8) as the Tarshish fleet was wrecked in an easterly gale. (9) The likes of what we heard we have now witnessed in the city of the LORD of hosts, in the city of our God— may God preserve it forever!Selah. (10) In Your temple, God, we meditate upon Your faithful care. (11) The praise of You, God, like Your name, reaches to the ends of the earth; Your right hand is filled with beneficence. (12) Let Mount Zion rejoice! Let the towns of Judah exult, because of Your judgments. (13) Walk around Zion, circle it; count its towers, (14) take note of its ramparts; go through its citadels, that you may recount it to a future age. (15) For God—He is our God forever; He will lead us evermore.

(1) A song. A psalm of the Korahites. For the leader; on maḥalath leannoth. A maskil of Heman the Ezrahite. (2) O LORD, God of my deliverance, when I cry out in the night before You, (3) let my prayer reach You; incline Your ear to my cry. (4) For I am sated with misfortune; I am at the brink of Sheol. (5) I am numbered with those who go down to the Pit; I am a helpless man (6) abandoned among the dead, like bodies lying in the grave of whom You are mindful no more, and who are cut off from Your care. (7) You have put me at the bottom of the Pit, in the darkest places, in the depths. (8) Your fury lies heavy upon me; You afflict me with all Your breakers.Selah. (9) You make my companions shun me; You make me abhorrent to them; I am shut in and do not go out. (10) My eyes pine away from affliction; I call to You, O LORD, each day; I stretch out my hands to You. (11) Do You work wonders for the dead? Do the shades rise to praise You?Selah. (12) Is Your faithful care recounted in the grave, Your constancy in the place of perdition? (13) Are Your wonders made known in the netherworld, Your beneficent deeds in the land of oblivion? (14) As for me, I cry out to You, O LORD; each morning my prayer greets You. (15) Why, O LORD, do You reject me, do You hide Your face from me? (16) From my youth I have been afflicted and near death; I suffer Your terrors wherever I turn. (17) Your fury overwhelms me; Your terrors destroy me. (18) They swirl about me like water all day long; they encircle me on every side. (19) You have put friend and neighbor far from me and my companions out of my sight.