Numbers 16:29-31 Common English Bible (CEB)
29 If all these people die a natural death, or if their fate be that of all humans, then the Lord hasn’t sent me. 30 But if the Lord performs an act of creation, and the ground opens its mouth and swallows them and everything that belongs to them, so that they descend alive to their graves, then you’ll know that these men disrespected the Lord.”
The rebels’ punishment
31 As soon as he finished speaking these words, the ground under them split open.