And out of all lands - An addition to the words in Kings. The principal countries would no doubt be Arabia and Armenia - the former always famous for its excellent breed; the latter mentioned in Ezekiel Ezekiel 27:14 as trading with horses in the fairs of Tyre.
Related Commentaries of 2 Chronicles 9:28
2 Chronicles 9:28
28 And they brought unto Solomon horses out of Egypt, and out of all lands.