Three companies — To make a shew of a vast army. Within the pitchers — Partly to preserve the flame from the wind and weather; and partly to conceal it, and surprise their enemy with sudden flashes of light.
Related Commentaries of Judges 7:16
Judges 7:16
16 And he divided the three hundred men into three companies, and he put a trumpetc in every man's hand, with empty pitchers, and lamps within the pitchers.