Judges 7:16-19

16He divided his 300 men into three separate groups. He gave a trumpet and an empty pot to each soldier. Each man put a burning branch into his pot.

17Gideon said to his men, ‘Watch me carefully. When we get near to the enemy's camp, you must do the same thing that I do.

18You will be all around the camp. I and my group of men will make a noise with our trumpets. Then you must also make a noise with your trumpets. Then shout, “We are fighting for the Lord and for Gideon!” ’

19Gideon took 100 men with him to the edge of the Midianites' camp. It was the middle of the night. A new group of Midianite guards had just started their work. Gideon's men made a loud noise with their trumpets. They also broke the pots that they were holding.