Charles Ellicott Commentary 1 Chronicles 18:12-13

"Moreover Abishai the son of Zeruiah smote of the Edomites in the Valley of Salt eighteen thousand. And he put garrisons in Edom; and all the Edomites became servants to David. And Jehovah gave victory to David whithersoever he went." — 1 Chronicles 18:12-13 (ASV)

The subjugation of Edom. The paragraph mark should be at 1 Chronicles 18:12, not 1 Chronicles 18:13.