"His daughter-in-law, the wife of Phinehas, was pregnant and near the time of delivery. When she heard the news that the ark of God had been captured and that her father-in-law and her husband were dead, she went into labor and gave birth, but was overcome by her labor pains." NIV translation
When she heard the news, Phinehas' wife went into labor and was dying. We see that God's word concerning the entire family of Eli was being fulfilled.
"As she was dying, the women attending her said, 'Don't despair; you have given birth to a son.' But she did not respond or pay any attention. She named the boy Ichabod, saying 'The Glory has departed from Israel - because of the capture of the ark of God and the deaths of her father-in-law and her husband. She said, 'The Glory has departed from Israel, for the ark of God has been captured.'" NIV translation
We see that Phinehas' wife had given up all hope and even named her son "no glory". The people were caught up in a symbol of God's presence and did not realize that the box they had lost was empty. God had not been there on the battlefield and He was not trapped in some box to be captured.
This empty box is a picture of many "churches" of today. They may look good on the outside but their is no Spirit of God on the inside.