Judges 3:11-12, 30

And the land was at rest [from oppression for] forty years. Then Othniel the son of Kenaz died. Now the Israelites again did evil in the sight of the LORD, and the LORD strengthened Eglon king of Moab against Israel, since they had done what was evil in the sight of the LORD.

So Moab was subdued and humbled that day under the hand of Israel, and the land was at rest for eighty years.