2 Samuel 5:24

And when thou hearest the sound of a rustling in the grove of Wailing, then thou shalt go down against them; for the Lord will then go out before thee, to smite in the battle of the Philistines.

And it shall come to pass when thou hearest the sound of a clashing together from the grove of weeping, then thou shalt go down to them, for then the Lord shall go forth before thee to make havoc in the battle with the Philistines.