https://www.btstories.com/gideons-fleece/
For seven years, the Midianites came into Israel like a swarm of locusts. They moved across the land, taking everything off it—all the crops and farm animals. They left nothing for the Israelites to eat. The people became desperate and had to find places to hide in mountain caves.
A man named Gideon was also hiding from the Midianites. He had to thresh his wheat in a wine vat instead of an open threshing floor. The Angel of the Lord came and sat under an oak tree nearby. He said, “The Lord is with you, oh mighty warrior.”