2 Kings 3:9

So the king of Israel went, and the king of Judah
The way of the wilderness of Edom, proposed by the latter:

and the king of Edom;
whom they took with them in their way, who was not properly a king, but a viceroy or deputy, see ( 1 Kings 22:47 )

and they fetched a compass of seven days journey;
they went round the Dead Sea, and through the wilderness of Edom, and so to the borders of Moab:

and there was no water for the host, and for the cattle that followed
them;
neither for the soldiers in the army, nor the cattle that drew the carriages, being in a wilderness.