Moreover Abishai the son of Zeruiah struck of the Edomites in the Valley of Salt eighteen thousand.
These verses are parallel with  2 Samuel 8:1-14; and we have devoted nine pages to a discussion of these verses in my commentary on Second Samuel, pp. 99-108.  The Chronicler made no mention of David's extreme cruelty to the Moabites; but otherwise there are few variations.