Numbers 26:9-10

9The sons of Eliab: Nemuel and Dathan and Abiram. These are the Dathan and Abiram who were 1called by the congregation, who contended against Moses and against Aaron in the company of Korah, when they contended against the Lord,

10and 2the earth opened its mouth and swallowed them up along with Korah, when that company died, 3when the fire devoured 250 men, so that they became a 4warning.