Numbers 16:1

The sons of Izhar: Korah and Nepheg and Zichri.

and what He did to Dathan and Abiram, the sons of Eliab, the son of Reuben, when the earth opened its mouth and swallowed them, their households, their tents, and every living thing that followed them, among all Israel—

Then they became envious of Moses in the camp, And of Aaron, the holy one of Yahweh,

Woe to them! For they have gone the way of Cain, and for pay they have poured themselves into the error of Balaam, and perished in the rebellion of Korah.

Korah Rises Up Against Moses