'Forty Years' in the Bible

Then the land had rest forty years. And Othniel the son of Kenaz died.

“Thus let all Your enemies perish, O Lord;But let those who love Him be like the rising of the sun in its might.”And the land was undisturbed for forty years.

So Midian was subdued before the sons of Israel, and they did not lift up their heads anymore. And the land was undisturbed for forty years in the days of Gideon.

Now the sons of Israel again did evil in the sight of the Lord, so that the Lord gave them into the hands of the Philistines forty years.