What does 1 Samuel 23:26 mean?

Saul was going along one side of the mountain, and David and his men were on the other side, hurrying to get away. Saul and his army were closing in, about to trap David and his men. 1 Samuel 23:26 - Modern Text Bible

(It's a tense moment: Saul is almost on top of David, and it looks like David is about to be caught.)