King James Version
And it shall be, when thou shalt hear a sound of going in the tops of the mulberry trees, that then thou shalt go out to battle: for God is gone forth before thee to smite the host of the Philistines.English Standard Version
And when you hear the sound of marching in the tops of the balsam trees, then go out to battle, for God has gone out before you to strike down the army of the Philistines."New International Version
As soon as you hear the sound of marching in the tops of the balsam trees, move out to battle, because that will mean God has gone out in front of you to strike the Philistine army."