New Living Translation
The armies of Moab and Ammon turned against their allies from Mount Seir and killed every one of them. After they had destroyed the army of Seir, they began attacking each other.

American Standard Version
For the children of Ammon and Moab stood up against the inhabitants of mount Seir, utterly to slay and destroy them: and when they had made an end of the inhabitants of Seir, every one helped to destroy another.

Berean Study Bible
The Ammonites and Moabites rose up against the inhabitants of Mount Seir, devoting them to destruction. And when they had made an end to the inhabitants of Seir, they helped to destroy one another.

Douay-Rheims Bible
For the children of Ammon, and of Moab, rose up against the inhabitants of mount Seir, to kill and destroy them: and when they had made an end of them, they turned also against one another, and destroyed one another.

English Revised Version
For the children of Ammon and Moab stood up against the inhabitants of mount Seir, utterly to slay and destroy them: and when they had made an end of the inhabitants of Seir, every one helped to destroy another.

King James Bible
For the children of Ammon and Moab stood up against the inhabitants of mount Seir, utterly to slay and destroy them: and when they had made an end of the inhabitants of Seir, every one helped to destroy another.

World English Bible
For the children of Ammon and Moab stood up against the inhabitants of Mount Seir, utterly to kill and destroy them: and when they had made an end of the inhabitants of Seir, everyone helped to destroy another.

Young's Literal Translation
and the sons of Ammon stand up, and Moab, against the inhabitants of mount Seir, to devote and to destroy, and at their finishing with the inhabitants of Seir, they helped, a man against his neighbour, to destroy.

2 Chronicles 20:23 Additional Translations ...