1 Samuel 7:10-12

And as Samuel was offering up the burnt-offering, the Philistines drew near to battle against Israel; but Jehovah thundered with a great thunder on that day upon the Philistines, and discomfited them; and they were smitten down before Israel. And the men of Israel went out of Mizpah, and pursued the Philistines, and smote them, until they came under Beth-car. Then Samuel took a stone, and set it between Mizpah and Shen, and called the name of it Eben-ezer, saying, Hitherto hath Jehovah helped us.