Judges 7:16

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

Dream

In Genesis 28:12, this signifies foresight – for prophetic dreams were predictions of things to come. (Arcana Coelestia 3698)

A dream, as in Genesis 20:3, signifies something being somewhat obscure.