1 Chronicles 14:13-16

13And the Philistines yet again made a raid in the valley.

14And David inquired again of God; and God said unto him, Thou shalt not go up after them: turn away from them, and come upon them over against the mulberry trees.

15And 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;

16And David did as God commanded him: and they smote the host of the Philistines from Gibeon even to Gezer.