Israel Routs the Philistines: As news of these events spread (vss 1-14), there were dramatic effects in both camps. The Philistine outposts became aware of their vulnerability and almost certainly headed back to their base, causing panic there. 

14:15–19 According to verse 15, the ground shook, adding to the panic. The writers state that God was involved.

Saul’s reaction to the observable chaos in the Philistine ranks was twofold. First he carried out a head count, which revealed that Jonathan and his armor-bearer were missing. Then he sent for Ahijah and the ark to engage in some kind of ritual, presumably to find out what he should do. The contrast between Jonathan’s confidence that God was on his side and his leaping immediately into action and Saul’s unconfident dithering is unmistakable…