Albert Barnes Commentary 1 Samuel 7:14

"And the cities which the Philistines had taken from Israel were restored to Israel, from Ekron even unto Gath; and the border thereof did Israel deliver out of the hand of the Philistines. And there was peace between Israel and the Amorites." — 1 Samuel 7:14 (ASV)

This shows the vigor and success of Samuel’s government. He seems not only to have expelled the Philistines from the interior of Israel but also to have attacked them in their own land, taking from them the cities and adjacent territory that properly belonged to Israel but which the Philistines had seized.

During this war, the Amorites, finding the Philistines to be worse masters than the Israelites, made common cause with Samuel and assisted the Israelites in their fight against the Philistines.