1 Samuel 4:2-3

4:2 The Philistines arranged their forces to fight Israel. As the battle spread out, Israel was defeated by the Philistines, who killed about four thousand men in the battle line in the field.

4:3 When the army came back to the camp, the elders of Israel said, “Why did the Lord let us be defeated today by the Philistines? Let’s take with us the ark of the covenant of the Lord from Shiloh. When it is with us, it will save us from the hand of our enemies.

1 Samuel 4:10-11

4:10 So the Philistines fought. Israel was defeated; they all ran home. The slaughter was very great; thirty thousand foot soldiers fell in battle. 4:11 The ark of God was taken, and the two sons of Eli, Hophni and Phineas, were killed.