Following the failure of the spies and the subsequent divine decree, a deep crisis sweeps through the Israelite camp. The realization of a lost opportunity and the heavy punishment of wandering in the desert until their death brings about a wave of profound grief. Moses delivers this devastating news immediately after the spies themselves die in a plague [העמק דבר]. The intense mourning of the Israelites reflects a deep regret for their actions. They internalize their failure, realizing they acted wrongly and should have trusted God, and they feel the crushing weight of the decree condemning them to live out their days in the wilderness [בכור שור, ביאור שטיינזלץ, צאינה וראינה]. Yet, this very expression of sorrow reveals that, at their core, the people still hold on to their belief in God and in Moses [ביאור שטיינזלץ].
Commentators offer different perspectives on exactly who among the camp experiences this profound grief. One approach suggests that the mourners are the adult men of military age, twenty years and older. This group suddenly recognizes their bitter mistake in believing that God hated them, whereas the younger generation actually accepts the decree of wandering with love [העמק דבר]. Another perspective identifies the mourners as the mixed multitude who joined the Israelites. According to this view, their sorrow is driven by sheer terror, as they fear they will die immediately on the spot, just as the spies did [שפתי כהן].
Ultimately, this heavy mourning paves the way for another tragedy. When the men wake up the next morning and find themselves still alive, they mistakenly conclude that God considers their sin to be an unintentional mistake, which is why they were spared. This misunderstanding pushes them to march toward the Land of Israel despite explicit warnings, transforming their initial failure into a willful and deliberate rebellion against God's command [שפתי כהן, צאינה וראינה]. Furthermore, the dread of wandering endlessly in the desert is so overwhelming that they prefer to risk everything and attempt to conquer the land by force, a desperate decision that ends in their defeat [העמק דבר].