1 Chronicles 18:10-14

He sent Hadoram his son to king David, to enquire of his welfare, and to congratulate him, because he had fought against Hadarezer, and smitten him; (for Hadarezer had war with Tou;) and with him all manner of vessels of gold and silver and brass.

Them also king David dedicated unto the LORD, with the silver and the gold that he brought from all these nations; from Edom, and from Moab, and from the children of Ammon, and from the Philistines, and from Amalek.

Moreover Abishai the son of Zeruiah slew of the Edomites in the valley of salt eighteen thousand.

And he put garrisons in Edom; and all the Edomites became David’s servants. Thus the LORD preserved David whithersoever he went.

So David reigned over all Israel, and executed judgment and justice among all his people.