'Forty Years' in the Bible

Your children shall be wanderers in the wilderness forty years, and shall bear your prostitution, until your dead bodies be consumed in the wilderness.

After the number of the days in which you spied out the land, even forty days, for every day a year, you will bear your iniquities, even forty years, and you will know my alienation.'

The LORD's anger was kindled against Israel, and he made them wander back and forth in the wilderness forty years, until all the generation, who had done evil in the sight of the LORD, was consumed.