1 Chronicles 14:15

When you hear the sound of marching in the tops of the mulberry trees, then go out to battle; for God has gone out before you to strike the army of the Philistines.”

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.