Numbers 16:30-32

But if the LORD does something unheard of, and the earth opens up and swallows them with all they own, so that they go down alive to the world of the dead, you will know that these men have rejected the LORD.” As soon as he had finished speaking, the ground under Dathan and Abiram split open and swallowed them and their families, together with all of Korah's followers and their possessions.