Num 26:9-11

9The descendants of Eliab: Nemuel, Dathan, and Abiram. These are the same Dathan and Abiram, chosen from the congregation, who rebelled against Moses and Aaron in the company of Korah, when they rebelled against the Lord,10and the earth opened its mouth and swallowed them up along with Korah, when that company died, when the fire devoured two hundred fifty men; and they became a warning.11Notwithstanding, the sons of Korah did not die.