Numbers 26:9-10

⁹and his grandsons were Nemuel, Dathan and Abiram. Dathan and Abiram were the leaders who joined with Korah to conspire against Aaron and Moses/me and rebelled against Yahweh.

¹⁰But the earth opened up and swallowed them and Korah. Yahweh also sent a fire that burned up 250 men who supported those three men. That was a warning to all the Israeli people that they should respect and obey the leaders whom Yahweh had appointed.