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2 Chronicles 20:23
Brenton's English Septuagint · Berean Standard Bible
Then the children of Ammon and Moab rose up against the dwellers in mount Seir, to destroy and consume them; and when they had made an end of [destroying] the inhabitants of Seir, they rose up against one another so that they were utterly destroyed.
The Ammonites and Moabites rose up against the inhabitants of Mount Seir, devoting them to destruction (note: Forms of the Hebrew cherem refer to the giving over of things or persons to the LORD, either by destroying them or by giving them as an offering.). And when they had finished off the inhabitants of Seir, they helped to destroy one another.