Ebenezer means “stone of help.” It was a stone set up by Samuel after Israel received a decisive victory over the Philistines. The stone served as a memorial of the help Israel had received from Jehovah.
The name expresses Samuel’s public testimony that the LORD had helped Israel. It commemorated the victory granted after the Philistines had previously defeated Israel in the same general region.
Its position is defined as between Mizpeh and Shen, though the exact site has not been identified.