As soon as you hear the sound of marching in the tops of the balsam trees, move out to battle, because this will mean that God has gone out before you to strike the camp of the Philistines.”
KJV
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.
ASV
And it shall be, when thou hearest the sound of marching in the tops of the mulberry-trees, that then thou shalt go out to battle; for God is gone out before thee to smite the host of the Philistines.