1 Samuel 4:6-7, 10-11

When the Philistines heard Israel’s shout, they asked, “What’s all this shouting in the Hebrew camp?” Then the Philistines found out that the Ark of the LORD had come into the Hebrew camp. They were afraid and said, “A god has come into the Hebrew camp! We’re in trouble! This has never happened before!

So the Philistines fought hard and defeated the Israelites, and every Israelite soldier ran away to his own home. It was a great defeat for Israel, because thirty thousand Israelite soldiers were killed. The Ark of God was taken by the Philistines, and Eli’s two sons, Hophni and Phinehas, died.