ציטירנדיקער פּירוש אויף שמות 6:24

of the sons of Korah Assir, Elkanah, and Abiasaf. At first, they were in their father’s counsel, but at the time of the controversy they parted, and when all those around them were swallowed up, and the earth opened its mouth, their place was left within the mouth of the earth, as the matter that is stated (Num. 26:11): “But the sons of Korah did not die.” There they uttered a song, and there they composed these psalms. [Then] they ascended from there, and the holy spirit rested on them, whereupon they prophesied concerning the exiles, the destruction of the Temple, and the Davidic dynasty.

Our paragraph contains the names of no fewer than six prophets from the tribe of Levi. They are: Aaron, Moses, Pinchas (identical with Elijah), plus three sons of Korach Assir, Elkanah, and Aviasaph (verse 24). They have been enumerated in the list of 48 prophets in Megillah 14. These six prophets all lived during the same time. Presumably, the verse in Numbers 26,11 stating that Korach’s sons did not die (during the uprising) refers to these three prophets.