Numbers 16:30-32

But if the LORD brings about something unprecedented, and the ground opens its mouth and swallows them along with all that belongs to them so that they go down alive into Sheol,  then you will know that these men have despised the LORD.” Just as he finished speaking all these words, the ground beneath them split open. The earth opened its mouth and swallowed them and their households, all Korah’s people,  and all their possessions.