מדרש על שמואל א 2:6

..."Let not the rich person glorify themselves with their wealth (Yirm 9:22)." This [refers to] Korach the Levite, who had three hundred mules just to carry the load of the keys to his hidden storehouses.  His wealth was so much the more so, wondrous and vast.  Where did he get all this?  It was the money that Yosef had collected in Egypt [in return for distributing the stored grain during the seven years of famine], which had filled three towers. Each tower was a hundred amot [about 180 feet] deep and a hundred amot wide. As soon as Korach found one of these towers, he became proud of his wealth. Another one was found by Antiochus, and the third is hidden for the World to Come. The origin of Korach's dispute was a widow who had a single ewe. When she came to shear it [for the first time], Aharon heard and took the wool. She went to Korach and wept before him, telling him, "This and this has Aharon done to me." Korach came by Aharon and said to him, "What have you done by this widow, to take her wool?" Aharon said to him, "It is mine according to the Torah, for as it says, 'the premier-part of the shearing of your sheep you are to give him' (Dev 18:4)." So Korach took four silver [coins] and gave [them] to her. The days [passed] and the ewe gave birth to its first-born. Aharon heard and took the lamb. She went and wept before Korach. Korach said to Aharon, "What is it for you and for this widow, to take the son of the ewe?" He said to him, "It is mine according to the Torah, for as it says, 'every firstling that is born in your flock and in your herd, the male-one, you are to hallow to ha-Shem your God' (Dev 15:19)." Korach went to him, full of anger. When the widow saw this, she sent and slaughtered the ewe. Aharon heard, and came and book the shankbone, the jawbone, and the rough-stomach. Korach said to him, "What is it for you, by this widow?" He said to him, "They are mine according to the Torah, for as it says, 'the priest is to be given the shankbone, the jawbone, and the rough-stomach' (Dev 18:3)." When the widow saw this, she stood and specially-devoted the meat. Aharon heard and took the meat. Korach said to him, "It wasn't enough, everything that you took from her? Now even the meat?" He said to him, "It is mine according to the Torah, for as it says, 'everything specially-devoted in Israel -- it is for you' (Bam 18:14, Parshat Korach)." He [Korach] said to him [Moshe], "Why have you, son of Amram, established authority over us, and been raised up over us?" Moshe said to him, "Unto the morrow, judgement." In the morning, Korach had gathered to him 250 men with [fire-]pans and smoking-incense. Immediately Moshe stood before the Holy One of Blessing and said, "Multiplier of Universes, is this prophecy you have sent me true?" Ha-Shem replied to him, "It is true. And now you will see what I will do to Korach, and why his name is called Korach. For in his days, there will be made baldness in Israel." Immediately the Holy One of Blessing instructed the ground and it swallowed them [Korach and his followers] up to their navels. Korach cried out and said, "Moshe! Have mercy on us!" Moshe said to them, "'Too much is yours, Sons of Levi!' (Bam 15:7)." Immediately they were swallowed up [by the earth], and the rest were burned up [by fire]. Those that were swallowed [by the earth] reasoned that they would never rise up [again]. Until Hannah came and prophesied for them, as it [the song of Hannah] says, 'ha-Shem brings death and gives life, lowers to Sheol and raises up (Shmuel I 2:6).' But in all this they didn't believe, until the Beit ha-Mikdash destroyed. [For the earth] swallowed the gates of the Beit ha-Mikdash, and they [the gates] came by Korach and he grabbed hold of them. They [Korach and his followers] said, "When these gates rise up, so too we will be brought up with them." [ed. Jellinek: And they were appointed the guardians, or, those who carried out the observances, over the gates until they rise up.] Therefore we say, 'Let not the rich person glorify themselves with their wealth,' for all wealth belongs to the Holy One of Blessing. As it says, 'Mine is the silver and mine is the gold -- the word of ha-Shem, Master of Legions (Hag 2:8). And it says, 'One who pursues righteousness and kindness will find life, righteousness, and honor (Mish 21:21).'

We are taught in a Baraitha: The school of Shammai says: "Three classes of people appear on the day of Judgment: the perfectly righteous, the grossly wicked, and the intermediate class. The sentence of eternal life is promptly written and sealed for the perfectly righteous; the sentence of Gehenna is promptly written and sealed for the grossly wicked; as it is said (Dan. 12, 2) And many of them that sleep in the dust shall awake, some to everlasting life, and some to shame and everlasting contempt. The intermediate class descend to Gehenna (Fol. 17), but they weep and come up again, as it is said (Zech. 13, 9) And I will bring the third part through the fire, and I will refine them as silver is refined, and will try them as gold is tried; and he shall call on My name, and I will answer him. Concerning this last class of men Hannah said (I Sam. 2, 6) The Lord causeth to die and maketh alive. He bringeth down to the grave and bringeth up again." But the school of Hillel says: "And He who abounds in kindness inclines [the scale of justice] towards the side of kindness. Concerning this third class of men David said (Ps. 116, 1) It is lovely to me that the Lord heareth my voice; in fact, David applies to them the entire chapter, including Thou hast delivered my soul from death (Ib. 8)." Jews who sin with their bodies as well as non-Jews who sin with their bodies, descend to Gehenna, and their punishment is to be in Gehenna for a period of twelve months; after that time their bodies are destroyed and their souls burnt, and the winds scatter and turn their ashes under the soles of the feet of the righteous, as we read (Mal. 3223) And ye shall tread down the wicked, for they shall be as ashes under the soles of your feet; but as for heretics, informers, Epicureans (disbelievers) who deny the Torah or resurrection, or who separate themselves from the congregation, or those (rulers) who tyrannize the land of the living, or who sin and cause others to sin, as did Jeroboam, the son of Nebat, and his associates, — they all descend to Gehenna, and are judged there from generation to generation; as it is said (Is. 66, 24) And they shall go forth and look upon the carcasses of the men who have transgressed against Me; for their worm shall not die, neither shall their fire be quenched. Even when Gehenna will be destroyed, they will not be consumed, as it is said (Ps. 49, 15) And their forms wasteth away in the nether world. But, why to that extent? Because they laid their hands on the Temple; as it is said: "From their own dwelling. Mi-zbul; and the word z'bul refers to the Temple, as it is said (I Kings 8, 3) I have indeed built a dwelling place (z'bitl) for Thee. It is said above: Concerning them said Hannah, The Lord causeth to die and maketh alive." R. Isaac b. Abin said: "Their faces are black like the sides of a caldron;" while Raba remarked: "Those who are now the handsomest of the people of Mechuzza will yet be called the children of Gehenna."

(12) We are taught in a Baraitha: The school of Shammai says: "Three classes of people appear on the day of Judgment: the perfectly righteous, the grossly wicked, and the intermediate class. The sentence of eternal life is promptly written and sealed for the perfectly righteous; the sentence of Gehenna is promptly written and sealed for the grossly wicked; as it is said (Dan. 12, 2) And many of them that sleep in the dust shall awake, some to everlasting life, and some to shame and everlasting contempt. The intermediate class descend to Gehenna (Fol. 17), but they weep and come up again, as it is said (Zech. 13, 9) And I will bring the third part through the fire, and I will refine them as silver is refined, and will try them as gold is tried; and he shall call on My name, and I will answer him. Concerning this last class of men Hannah said (I Sam. 2, 6) The Lord causeth to die and maketh alive. He bringeth down to the grave and bringeth up again." But the school of Hillel says: "And He who abounds in kindness inclines [the scale of justice] towards the side of kindness. Concerning this third class of men David said (Ps. 116, 1) It is lovely to me that the Lord heareth my voice; in fact, David applies to them the entire chapter, including Thou hast delivered my soul from death (Ib. 8)." Jews who sin with their bodies as well as non-Jews who sin with their bodies, descend to Gehenna, and their punishment is to be in Gehenna for a period of twelve months; after that time their bodies are destroyed and their souls burnt, and the winds scatter and turn their ashes under the soles of the feet of the righteous, as we read (Mal. 3223) And ye shall tread down the wicked, for they shall be as ashes under the soles of your feet; but as for heretics, informers, Epicureans (disbelievers) who deny the Torah or resurrection, or who separate themselves from the congregation, or those (rulers) who tyrannize the land of the living, or who sin and cause others to sin, as did Jeroboam, the son of Nebat, and his associates, — they all descend to Gehenna, and are judged there from generation to generation; as it is said (Is. 66, 24) And they shall go forth and look upon the carcasses of the men who have transgressed against Me; for their worm shall not die, neither shall their fire be quenched. Even when Gehenna will be destroyed, they will not be consumed, as it is said (Ps. 49, 15) And their forms wasteth away in the nether world. But, why to that extent? Because they laid their hands on the Temple; as it is said: "From their own dwelling. Mi-zbul; and the word z'bul refers to the Temple, as it is said (I Kings 8, 3) I have indeed built a dwelling place (z'bitl) for Thee. It is said above: Concerning them said Hannah, The Lord causeth to die and maketh alive." R. Isaac b. Abin said: "Their faces are black like the sides of a caldron;" while Raba remarked: "Those who are now the handsomest of the people of Mechuzza will yet be called the children of Gehenna."