Therefore, we will not fear when the land is exchanged. The sons of Korah said, "Do not fear him, for the day is coming when the Holy One, blessed be He, will shake the wicked from the earth, as it is said, 'That it might take hold of the ends of the earth, and the wicked be shaken out of it' (Job 38:13). And it is said, 'For behold, I create new heavens and a new earth' (Isaiah 65:17). And where will the righteous be standing at that time?
'But ye that did cleave unto the Lord your God are alive every one of you this day' (Deuteronomy 4:4). The sons of Korah said to them, 'Do not fear, for we have seen all the miracles that the Holy One, blessed be He, has done for us, as it is said, 'And the earth opened her mouth and swallowed them up' (Numbers 16:32). And where were we at that time? We were in the air.
And it is also said, 'And the sons of Korah died not' (Numbers 26:11). Rabbi Nehemiah says it was not so, but at the moment when the earth opened and swallowed them up, the Holy One, blessed be He, stood them up like the mast of a ship. And it is said, 'And they shall be a sign' (Numbers 26:10). And the sons of Korah said, 'Do not fear, for we know what the Holy One, blessed be He, has done for us. We will not fear when the land is exchanged.' And it is said, 'For the mountains shall depart' (Isaiah 54:10).