1 Samuel 4:2-3, 10-11

The Philistines drew up in line against Israel, and when the battle spread, Israel was defeated before the Philistines, who killed about four thousand men on the field of battle. And when the people came to the camp, the elders of Israel said, “Why has the LORD defeated us today before the Philistines? Let us bring the ark of the covenant of the LORD here from Shiloh, that it may come among us and save us from the power of our enemies.”

So the Philistines fought, and Israel was defeated, and they fled, every man to his home. And there was a very great slaughter, for thirty thousand foot soldiers of Israel fell. And the ark of God was captured, and the two sons of Eli, Hophni and Phinehas, died.