Judges 6:1-4

Then the sons of Israel did what was evil in the sight of the Lord; and the Lord handed them over to Midian for seven years.

The power of Midian prevailed against Israel. Because of Midian the sons of Israel made for themselves the dens which were in the mountains and the caves and the strongholds.

For whenever Israel had sown, the Midianites would come up with the Amalekites and the people of the east and march against them.

So they would camp against them and destroy the produce of the earth as far as Gaza, and leave no sustenance in Israel, nor a sheep, ox, or donkey.