Numbers 26:9-10

⁹and the sons of Eliab were Nemuel, and Dathan, and Abiram. This is that Dathan and Abiram, summoned of the assembly, who contended against Moses and against Aaron in the band of Korah, when they contended against Jehovah.

¹⁰And the earth opened its mouth, and swallowed them up together with Korah, when that band died, when the fire devoured the two hundred and fifty men; and they became a sign.