Jonathan said to the young man who bore his armor, Come, and let us go over to the garrison of these uncircumcised: it may be that Yahweh will work for us; for there is no restraint to Yahweh to save by many or by few.
God caused the Philistines to fight one another (1 Samuel 14:20; cf. Judges 7:22; 2 Chronicles 20:23). Some Israelite deserters or mercenaries who were fighting for the Philistines even changed their allegiance and took sides with Jonathan. The tide of battle had turned. Beth-aven stood near Michmash, but the exact site is uncertain.