Judges 7:16; Judges 7:20

16 He divided the 300 men into three companies, and he put trumpets and empty pitchers into the hands of all of them, with torches inside the pitchers.

20 When the three companies blew the trumpets and broke the pitchers, they held the torches in their left hands and the trumpets in their right hands for blowing, and cried, "A sword for the LORD and for Gideon!"