Numbers 16:28 MSG

[28] Moses continued to address the community: “This is how you’ll know that it was God who sent me to do all these things and that it wasn’t anything I cooked up on my own. If these men die a natural death like all the rest of us, you’ll know that it wasn’t God who sent me. But if God does something unprecedented—if the ground opens up and swallows the lot of them and they are pitched alive into Sheol—then you’ll know that these men have been insolent with God.”