Numbers 16:1, 31-33

Now Korah the son of Izhar, son of Kohath, son of Levi, and Dathan and Abiram the sons of Eliab, and On the son of Peleth, sons of Reuben, took men.

And as soon as he had finished speaking all these words, the ground under them split apart. And the earth opened its mouth and swallowed them up, with their households and all the people who belonged to Korah and all their goods. So they and all that belonged to them went down alive into Sheol, and the earth closed over them, and they perished from the midst of the assembly.