John Gill Commentary Judges 7:17

"And he said unto them, Look on me, and do likewise: and, behold, when I come to the outermost part of the camp, it shall be that, as I do, so shall ye do." — Judges 7:17 (ASV)

And he said unto them, look on me, and do likewise
Observe what I do, and do the same, in blowing a trumpet, breaking a pitcher, and shouting with the words expressed by him:

and, behold, when I come to the outside of the camp ;
where the sentinels stood, and the watch was set:

it shall be, that as I do, so shall you do ;
and not before; a trumpet was not to be blown, nor a pitcher broken, nor a torch held out, nor a word spoken, till just they came to the outside of the camp: and then they were to observe the motions of Gideon, and do as he did.