What does 1 Samuel 14:15 mean?

Suddenly, panic broke out in the Philistine camp, in the field, and among all the troops. Even the guards and the raiding parties were terrified. The ground shook, and everyone knew something huge was happening—God was behind it. 1 Samuel 14:15 - Modern Text Bible

(God amplifies Jonathan’s action by causing chaos and fear among the Philistines, making it clear that this victory isn’t just about human effort.)