'Trumpets' in the Bible
So they took their provisions and their trumpets into their hand, and he sent all the men of Israel, each one, to his tent; but three hundred of the men he kept; the camp of Midian was below him in the valley.
He divided the three hundred men [into] three companies, and he put trumpets and empty jars in everyone's hand, with torches inside the jars.
When I and all who [are] with me blow on the trumpet, you must also blow on the trumpets and surround the camp, and you must say, 'To Yahweh and to Gideon!'"
So Gideon and the hundred men who [were] with him came to the edge of the camp [at] the beginning of the middle night-watch, when they had just finished setting up the guards, and they blew on the trumpets and smashed the jars that [were] in their hands.
When three companies blew on the trumpets and broke the jars, they held in their left hand the torches and in their right hand the trumpets for blowing, and they cried, "A sword for Yahweh and for Gideon!"
When they blew the three hundred trumpets, Yahweh set [the] sword of each one against his neighbor throughout the whole camp, and the camp fled as far as Beth Shittah toward Zererah, up to Abel Meholah, the border by Tabbath.