Numbers 16:28-30

And Moses said: “By this you shall know that the LORD has sent me to do all these works, for I have not done them of my own will. If these men die naturally like all men, or if they are visited by the common fate of all men, then the LORD has not sent me. But if the LORD creates a new thing, and the earth opens its mouth and swallows them up with all that belongs to them, and they go down alive into the pit, then you will understand that these men have rejected the LORD.”