1 Samuel 7:10-12 (NIV)
10 While Samuel was sacrificing the burnt offering, the Philistines drew near to engage Israel in battle. But that day the Lord thundered with loud thunder against the Philistines and threw them into such a panic that they were routed before the Israelites.
11 The men of Israel rushed out of Mizpah and pursued the Philistines, slaughtering them along the way to a point below Beth Kar.
12 Then Samuel took a stone and set it up between Mizpah and Shen. He named it Ebenezer, saying, “Thus far the Lord has helped us.”