Exodus 6:21
The sons of Izhar: Korah and Nepheg and Zichri.
Numbers 16:1
Korah son of Izhar, Dathan and Abiram sons of Eliab, and On son of Peleth dared to challenge Moses. Korah was a descendant of Kohath and Levi. Dathan, Abiram, and On were descendants of Reuben.
1 Chronicles 6:37-38
the son of Tahath, the son of Assir, the son of Ebiasaph, the son of Korah,
Exodus 6:24
The sons of Korah: Assir and Elkanah and Abiasaph; these are the families of the Korahites.
Numbers 16:32
and the earth opened up to swallow them, their families, the followers of Korah, and all their property.
Numbers 26:10-11
The ground opened up and swallowed them along with Korah. They and their followers died when the fire consumed the two hundred and fifty men. This was a warning.