A region on the northern border of the land of Israel. God designated it as the northern border for Moses during the initial Exodus, and later, in Ezekiel's vision, the northern border was also extended to Sedad.
Num 34:8and from Mount Hor you shall draw your line to the entrance of Hamath, and the end of the border shall be at Zedad.
Ezek 47:15This shall be the boundary of the land: On the north side, from the Great Sea by the way of Hethlon to the entrance of Zedad,