1 Chronicles 14:14-16

14 Therefore David enquired again of God; and God said unto him, Go not up after them; turn away from them, and come upon them over against the mulberry trees.
15 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.
16 David therefore did as God commanded him: and they smote the host of the Philistines from Gibeon even to Gazer.