2 Samuel 5:22-24

22The Philistines again attacked and overran the valley of Rephaim.

23David asked the Lord, and he answered, “Don’t attack now, but circle around behind them, and come at them in front of the balsam trees.

24When you hear the sound of marching in the tops of the balsam trees, act immediately because the Lord has gone ahead of you to defeat the Philistine army.”