1 Samuel 4:17-18

17And the messenger answered and said, “Israel fled before the Philistines and there has also been a great slaughter among the people. Also your two sons died—Hophni and Phinehas—and the ark of God was captured.”

18As soon as he mentioned of the ark of God, Eli fell backward from his seat beside the town gate. His neck broke and he died, for he was old and heavy. He had judged Israel 40 years.