Judges 6:11 (NIV)
The angel of the Lord came and sat down under the oak in Ophrah that belonged to Joash the Abiezrite, where his son Gideon was threshing wheat in a winepress to keep it from the Midianites.

Judges 6:14-16 (NIV)

The Lord turned to him and said, “Go in the strength you have and save Israel out of Midian’s hand. Am I not sending you?” “Pardon me, my lord,” Gideon replied, “but how can I save Israel? My clan is the weakest in Manasseh, and I am the least in my family.” The Lord answered, “I will be with you, and you will strike down all the Midianites, leaving none alive.”

Judges 7:19 (NIV)
Gideon and the hundred men with him reached the edge of the camp at the beginning of the middle watch, just after they had changed the guard. They blew their trumpets and broke the jars that were in their hands.

Judges 7:22 (NIV)
When the three hundred trumpets sounded, the Lord caused the men throughout the camp to turn on each other with their swords. The army fled to Beth Shittah toward Zererah as far as the border of Abel Meholah near Tabbath.