Numbers 16:30-33

³⁰But if Yahweh does something that has never happened before, if he causes the ground that is under their feet to open up and swallow these men and their families and all their possessions, and they fall into the opening and are buried while they are still alive, then you will know that these men have insulted Yahweh.”

³¹As soon as Moses/I said this, the ground split open beneath those men.

³²It swallowed them and their families and all those who were standing there with Korah and all of their possessions.

³³They fell into the opening in the ground while they were still alive, and all their possessions fell into the opening also. They disappeared, and the ground closed back up again.