But if the Lord creates an entirely new thing, and the ground opens its mouth and swallows them up, along with all that belongs to them, and they descend alive into Sheol (the nether world, the place of the dead), then you will understand that these men have spurned and rejected the Lord!”
and the earth opened its mouth and swallowed them and their households, and all the men who supported Korah, with all their possessions. [Num 26:10, 11]
“Our father died in the wilderness. He was not among those who assembled together against the Lord in the company of Korah, but he died for his own sin [as did all those who rebelled at Kadesh], and he had no sons. [Num 14:26-35]
and what He did to Dathan and Abiram, the sons of Eliab, the son of Reuben, when the earth opened its mouth and swallowed them, their households, their tents, and every living thing that followed them, in the midst of all Israel. [Num 26:9, 10]
Woe to them! For they have gone the [defiant] way of Cain, and for profit they have run headlong into the error of Balaam, and perished in the rebellion of [mutinous] Korah. [Gen 4:3-8; Num 16:22-24; 2 Pet 2:15]