Judges 8:28
Thus was Midian subdued before the children of Israel, so that they lifted up their heads no more. And the country was in quietness forty years in the days of Gideon.
Cross-reference
In Judges 3:11, the same formula 'land had rest 40 years' appears after Othniel — showing the pattern of deliverance and peace under judges.
In Judges 3:30, the land had rest 80 years after Ehud — another instance of the same rest formula, comparing lengths of peace.
In Judges 5:31, the land had rest 40 years after Deborah — identical phrasing, linking Gideon's era to the earlier judge.
In Psalm 83:9-12, the defeat of Midian is recalled as a model for God's victory — directly referencing the same event that brought rest here.
In Isaiah 9:4, the breaking of Midian's yoke is celebrated as a past deliverance — the same victory that secured the 40-year rest.
In Isaiah 10:26, the slaughter at the rock of Oreb is mentioned — a specific detail from Gideon's victory over Midian (Judges 7:25).