Numbers 14:30-34

not one shall come into the land where I swore that I would make you dwell, except Caleb the son of Jephunneh and Joshua the son of Nun. But your little ones, who you said would become a prey, I will bring in, and they shall know the land that you have rejected. But as for you, your dead bodies shall fall in this wilderness. And your children shall be shepherds in the wilderness forty years and shall suffer for your faithlessness, until the last of your dead bodies lies in the wilderness. According to the number of the days in which you spied out the land, forty days, a year for each day, you shall bear your iniquity forty years, and you shall know my displeasure.’