1 Samuel 4:2-3, 10-11

The Philistines went to meet the Israelites in battle. And as the battle spread, they defeated the Israelites, killing about four thousand soldiers on the battlefield. When some Israelite soldiers went back to their camp, the elders of Israel asked, “Why did the LORD let the Philistines defeat us? Let’s bring the Ark of the Agreement with the LORD here from Shiloh and take it with us into battle. Then God will save us from our enemies.”

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.