Judges 7:16-18

16He divided the three hundred men into three companies, and he put trumpets and empty pitchers into the hands of all of them, with torches inside the pitchers.

17And he said to them, “Look at me, then do likewise. When I come to the edge of the camp, do just as I do.

18When I and all who are with me blow the trumpet (ram’s horn), then all around the camp you also blow the trumpets and shout, ‘For the Lord and for Gideon!’ ”