'Forty Years' in the Bible

And your children will be wanderers in the waste land for forty years, undergoing punishment for your false ways, till your bodies become dust in the waste land.

And as you went through the land viewing it for forty days, so for forty years, a year for every day, you will undergo punishment for your wrongdoing, and you will see that I am against you.

Then the Lord was angry with Israel, and he made them wanderers in the waste land for forty years? till all that generation who had done evil in the eyes of the Lord was dead.