Tamar - Called Hazazon Tamar, or Engedi, 2 Chronicles 20:2.
The river - Besor, which runs into the sea near Gaza.
The south border (compare Numbers 34:4) commences with “Tamar,” probably a village near the southern end of the Dead Sea. The word means “palm-tree;” and is given to more than one city in the holy land.
The river to the great sea - literally, “riverward to the great sea.” By the “river” is meant the torrent-stream entering the Mediterranean near “Rhinocolura” (El Arish).