4 occurrences in 4 dictionaries
Reference: Jeruel
Easton
founded by God, a "desert" on the ascent from the valley of the Dead Sea towards Jerusalem. It lay beyond the wilderness of Tekoa, in the direction of Engedi (2Ch 20:16,20). It corresponds with the tract of country now called el-Hasasah.
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Morish
Jeru'el
A wilderness where Jehoshaphat was to find his enemies, the Ammonites, the Moabites, and the inhabitants of Mount Seir, who destroyed one another. 2Ch 20:16,23. Doubtless in some part of the wilderness west of the Dead Sea, but it is not definitely identified.
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Smith
Jer'uel
(founded by God), The wilderness of, the place in which Jehoshaphat was informed by Jahaziel the Levite that he should encounter the hordes of Ammon, Moab and the Mehunims.
The name has not been met with.