What does 2 Chronicles 25:11 mean?

And Amaziah took courage, and led forth his people, and went to the Valley of Salt, and smote of the children of Seir ten thousand.

And Amaziah strengthened himself, and led forth his people, and went to the valley of salt, and smote of the children of Seir ten thousand.

And Amaziah took courage, and led forth his people, and went to the Valley of Salt, and smote of the children of Seir ten thousand.

Then Amaziah took heart, and went out at the head of his people and came to the Valley of Salt, where he put to death ten thousand of the children of Seir;

And Amaziah hath strengthened himself, and leadeth his people, and goeth to the Valley of Salt, and smiteth the sons of Seir--ten thousand.

And Amasias taking courage led forth his people, and went to the vale of saltpits, and slew of the children of Seir ten thousand.

But Amaziah strengthened himself, and led forth his people, and went to the valley of salt, and smote of the children of Seir ten thousand.