2 Chronicles 20:23

23 What happened was that the people of 'Amon and Mo'av began attacking those people who lived by Mount Se'ir, to kill and destroy them completely; and when they had finished off the people from Se'ir, they set to work slaughtering one another.

2 Chronicles 20:23 Meaning and Commentary

2 Chronicles 20:23

For the children of Ammon and Moab stood up against the
inhabitants of Mount Seir
Supposing that they had acted a treacherous part by them, and took on the side of their enemies: utterly to slay and destroy them;
as they did: and when they had made an end of the inhabitants of Seir;
so that there were none left of them: everyone helped to destroy one another;
in their confusion mistook one another, either for Edomites or Jews, like the Midianites in the times of Gideon.

2 Chronicles 20:23 In-Context

21 After consulting with the people, he appointed those who would sing to ADONAI and praise the splendor of his holiness as they went out ahead of the army, saying, "Give thanks to ADONAI, for his grace continues forever."

22 Then, during the time when they were singing and praising, ADONAI brought a surprise attack against the people of 'Amon, Mo'av and Mount Se'ir who had come to fight Y'hudah; and they were defeated.

23 What happened was that the people of 'Amon and Mo'av began attacking those people who lived by Mount Se'ir, to kill and destroy them completely; and when they had finished off the people from Se'ir, they set to work slaughtering one another.

24 So when Y'hudah reached the watchtower overlooking the desert, they looked toward the horde; and there in front of them were corpses fallen to the ground; none had escaped.

25 Y'hoshafat and his army came to take the spoil from them and found among them personal property in abundance and corpses with precious jewels, which they stripped off for themselves until they couldn't carry any more. They took three days just to collect the spoil, there was so much.