ED

 
Name of the altar, erected by the tribes, Reuben, Gad, and Manasseh at the fords of the Jordan River
And the children of Reuben and the children of Gad called the altar Ed: for it shall be a witness between us that the Lord is God. (Joshua 22:3434And the children of Reuben and the children of Gad called the altar Ed: for it shall be a witness between us that the Lord is God. (Joshua 22:34))