אֵ֣לֶּה ׀ מִשְׁפְּחֹ֣ת לֵוִ֗י מִשְׁפַּ֨חַת הַלִּבְנִ֜י מִשְׁפַּ֤חַת הַֽחֶבְרֹנִי֙ מִשְׁפַּ֤חַת הַמַּחְלִי֙ מִשְׁפַּ֣חַת הַמּוּשִׁ֔י מִשְׁפַּ֖חַת הַקָּרְחִ֑י וּקְהָ֖ת הוֹלִ֥ד אֶת־עַמְרָֽם׃
Inilah kaum-kaum Lewi: kaum orang Libni, kaum orang Hebron, kaum orang Mahli, kaum orang Musi, kaum orang Korah. Kehat memperanakkan Amram.
Chizkuni
לזרח, Rashi comments here that the family of Ohad, had become extinct. He adds that also five of the sons of Binyamin’s family had become extinct. Rashi writes further that what was true of the family of Ohad of the tribe of Reuven, also applied to the family of Etzbon of the tribe of Gad. He explains that that Ozni in verse 16 of our chapter was in fact identical with Etzbon. According to the plain meaning of the text this was because they had not founded a family, i.e. had not married. If you were to ask that if this is correct where was the seventh family of which Rashi wrote that it had become extinct? We might have to assume that the missing family is that of Yishveh of the tribe of Asher. (Compare Genesis46,17, and Numbers 26,44, and the discrepancy in those two verses.) Rashi also writes that four families of the tribe of Levi appear to have disappeared between the first and the second census, i.e. the families of Shiee, Azieli, and some of the family of Yitzhar of whom only the family of Korach is listed here. This is certainly not meant to be an enumeration as only one third of the family are mentioned here when compared to the list in Exodus 6,21. Our author continues to quote lengthy comments by Rashi on this problem. [I have decided that the interested reader will prefer to read the text of Rashi for himself. Ed.]
Rashbam
ובני קהת עמרם ויצהר וחברון ועוזיאל. Whereas the Torah provides details of the names of the first three sons of Kehot, i.e. Amram, Yitzhar and Uzziel, no mention is made of any sons of Chevron. If this were to lead us to assume that Chevron had no sons, the Torah in Numbers 26,58 adds details under the heading: “and the family of Uzziel, etc.” This raises the question why the Torah kept silent about these details at this point. The reason appears to be that the names of the sons of Chevron do not appear in connection with any of their activities elsewhere in the Torah, whereas the names of the ones mentioned here appear also in their own right, not only as sons of their respective fathers. Amram appears as father of Moses, Aaron, and Miriam. The sons of Yitzhar appear in connection with the uprising of Korach (numbers 16,1) The sons of Uzziel, Mishael and Eltzafan, appear in connection with the burial of the two sons of Aaron Nadav and Avihu in Leviticus 10,4. The sons of Korach, Assir and Elkanah are complimented as not having died in the uprising headed by their father in Numbers 26,12. The sons of Aaron are mentioned specifically already in Exodus 24,1 as is Pinchas, the son of Eleazar. The sons of his brother Ittamar are not mentioned as they do not feature specifically elsewhere in the Torah.
Chizkuni
אחד אחוז מן החמשים ונתתה אותם ללוים, (from the half share of the other Israelites) “you shall withhold one in every fifty (humans, cattle, and chattels) and give them to the Levites.” When the Levites received 10 shares out of every thousand, the priests took for themselves one share. [Rabbi Chavell points out that our author appears to have made a miscalculation here. I will not get involved in this. Ed.]