Once more the Philistines came up and spread out in the Valley of Rephaim; so David inquired of the Lord, and he answered, “Do not go straight up, but circle around behind them and attack them in front of the balsam trees. As soon as you hear the sound of marching in the tops of the balsam trees, move quickly, because that will mean the Lord has gone out in front of you to strike the Philistine army.”
2 Samuel 5.22-24
Trust in the Lord with all your heart
and lean not on your own understanding;
in all your ways acknowledge him,
and he will make your paths straight.