Judges 9:33

And in the morning at sunrise, get up and advance against the city. When Gaal and his men come out against you, do to them whatever you are able.”

And it shall be, that in the morning, as soon as the sun is up, thou shalt rise early, and set upon the city: and, behold, when he and the people that is with him come out against thee, then mayest thou do to them as thou shalt find occasion.