Albert Barnes Commentary Joshua 22:34

"And the children of Reuben and the children of Gad called the altar [Ed]: For, [said they], it is a witness between us that Jehovah is God." — Joshua 22:34 (ASV)

The word עד ‛ êd is not found after “altar” in the text of most manuscripts, nor is it represented in the Septuagint or Vulgate. The passage should probably read: “the children of Reuben and the children of Gad named the altar, that (as they said) it might be, etc.” The title placed on the altar was perhaps simply a witness between them that the Lord was God (Wordsworth).