1 Chronicles 14:13-16

13The Philistines again raided the valley.

14So David again asked God what he should do. This time God told him, “Don’t march up after them; circle around them and come against them in front of the trees.

15When you hear the sound of marching in the tops of the trees, then attack. For at that moment the Lord is going before you to strike down the army of the Philistines.”

16David did just as God commanded him, and they struck down the Philistine army from Gibeon to Gezer.