And at first light in the morning, as the sun is rising, rush upon the city. And when he goes out against you, with his people, do to him what you are able to do.
Other versions
King James Version
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. English Standard Version
Then in the morning, as soon as the sun is up, rise early and rush upon the city. And when he and the people who are with him come out against you, you may do to them as your hand finds to do."New International Version
In the morning at sunrise, advance against the city. When Gaal and his men come out against you, do whatever your hand finds to do."