Albert Barnes Commentary Numbers 14:33

"And your children shall be wanderers in the wilderness forty years, and shall bear your whoredoms, until your dead bodies be consumed in the wilderness." — Numbers 14:33 (ASV)

Your whoredoms - Their several rebellions had been so many acts of faithless departure from the Lord who had taken them to Himself. And just as the children of the unchaste generally have to bear in their earthly lives much of the disgrace and misery that forms the natural penalty of their parents’ transgression, so here the children of the Israelites, although allowed to hope for an eventual entry into Canaan, were still to endure, through many long years of wandering, the appropriate punishment of their fathers’ willfulness.