Judges 7:16 (KJV)

And his fellow answered and said, This is nothing else save the sword of Gideon the son of Joash, a man of Israel: for into his hand hath God delivered Midian, and all the host.

And it was so, when Gideon heard the telling of the dream, and the interpretation thereof, that he worshipped, and returned into the host of Israel, and said, Arise; for the Lord hath delivered into your hand the host of Midian.

And he divided the three hundred men into three companies, and he put a trumpet in every man’s hand, with empty pitchers, and lamps within the pitchers.

And he said unto them, Look on me, and do likewise: and, behold, when I come to the outside of the camp, it shall be that, as I do, so shall ye do.

When I blow with a trumpet, I and all that are with me, then blow ye the trumpets also on every side of all the camp, and say, The sword of the Lord, and of Gideon.