Judges 6:2-4

The [powerful] hand of Midian prevailed against Israel. Because of Midian the sons of Israel made for themselves the dens (hideouts) which were in the mountains, and the caves and the [mountain] strongholds. For it was whenever Israel had sown [their seed] that the Midianites would come up with the Amalekites and the people of the east and go up against them. So they would camp against them and destroy the crops of the land as far as Gaza, and leave no sustenance in Israel as well as no sheep, ox, or donkey.