Numbers 16:1, 31-33

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

As he finished speaking all these words, the ground that was under them split open; and the earth opened its mouth and swallowed them up, and their households, and all the men who belonged to Korah with their possessions. So they and all that belonged to them went down alive to Sheol; and the earth closed over them, and they perished from the midst of the assembly.