1 Samuel 4:10-11, 18

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

When he mentioned the ark of God, Eli fell off the seat backward beside the gate, and his neck was broken and he died, for he was old and heavy. Thus he judged Israel forty years.