חסידות אויף במדבר 26:11

And all this is when a person enjoys tranquility (shalvah); but it is otherwise when he sees troubles befalling him anew — then, of necessity, the imagination (dimyon) is subdued. And this is what Scripture says: "which you have seen, what He did to Egypt," etc. And as for why [Scripture] mentioned Datan and Aviram and not Korach — because "the sons of Korach did not die" (Numbers 26:11). And one should take the moral lesson from Datan and Aviram: inasmuch as most of the world let their souls sin in order to leave a bequest to their children, when in truth nothing remains in a person's hand but the iniquities — as happened to Datan and Aviram, who were destroyed, they and their children and all that was theirs, etc. — and by way of this [lesson], the imagination's opposing force is no longer found [i.e., the illusion that drives a person to sin for worldly gain is dispelled]. And then it is an easy thing for Israel too to fear the LORD, just as it was for Moses, etc. — see there.