2 Samuel 5:24

The sound of a going; Hebrew, a marching. Under the cover of this thicket David was to wait until he heard the sound as of the regular tramp of an army in the tops of the baca trees. It would be in the morning that the wind would shake the treetops, but the sound was to be something more than the soft whispers of a gentle breeze. A gale was to put them into sudden motion, and then the soldiers would know that their Jehovah had gone forth to battle, and David must immediately bestir himself. The enthusiasm of his men must not cool down, but as soon as the wind rustled he must charge the enemy, and his warriors, feeling that they were going with the host of God, would break down all resistance by their impetuous onset.