New Revised Standard Version
When the men of Israel who were on the other side of the valley and those beyond the Jordan saw that the men of Israel had fled and that Saul and his sons were dead, they forsook their towns and fled; and the Philistines came and occupied them.

Contemporary English Version
The Israelites on the other side of Jezreel Valley and the other side of the Jordan learned that Saul and his sons were dead. They saw that the Israelite army had run away. So they ran away too, and the Philistines moved into the towns the Israelites had left behind.

New American Bible
When the Israelites on the slope of the valley and those along the Jordan saw that the men of Israel had fled and that Saul and his sons were dead, they abandoned their cities and fled. Then the Philistines came and lived in those cities.

Douay-Rheims Bible
And the men of Israel, that were beyond the valley, and beyond the Jordan, seeing that the Israelites were fled, and that Saul was dead, and his sons, forsook their cities, and fled: and the Philistines came and dwelt there.

And the men of Israel, that were beyond the valley, and beyond the Jordan, seeing that the Israelites were fled, and that Saul was dead, and his sons, forsook their cities, and fled: and the Philistines came and dwelt there.

they forsook the cities

1 Samuel 13:6 And when the men of Israel saw that they were straitened (for the people were distressed), they hid themselves in caves, and in thickets, and in rocks, and in dens, and in pits.

Leviticus 26:32,36 And I will destroy your land: and your enemies shall be astonished at it, when they shall be the inhabitants thereof. . . .

Deuteronomy 28:33 May a people which thou knowest not, eat the fruits of thy land, and all thy labours: and mayst thou always suffer oppression, and be crushed at all times.

Judges 6:2 And they were grievously oppressed by them. And they made themselves dens and caves in the mountains, and strong holds to resist.