Matthew Henry Commentary 2 Samuel 8:9-14

"And when Toi king of Hamath heard that David had smitten all the host of Hadadezer, then Toi sent Joram his son unto king David, to salute him, and to bless him, because he had fought against Hadadezer and smitten him: for Hadadezer had wars with Toi. And [Joram] brought with him vessels of silver, and vessels of gold, and vessels of brass: These also did king David dedicate unto Jehovah, with the silver and gold that he dedicated of all the nations which he subdued; of Syria, and of Moab, and of the children of Ammon, and of the Philistines, and of Amalek, and of the spoil of Hadadezer, son of Rehob, king of Zobah. And David gat him a name when he returned from smiting the Syrians in the Valley of Salt, even eighteen thousand men. And he put garrisons in Edom; throughout all Edom put he garrisons, and all the Edomites became servants to David. And Jehovah gave victory to David whithersoever he went." — 2 Samuel 8:9-14 (ASV)

All the precious things David possessed were dedicated things; they were designed for building the temple. The idols of gold David destroyed (2 Samuel 5:21), but the vessels of gold he dedicated.

Thus, in the conquest of a soul by the grace of the Son of David, whatever stands in opposition to God must be destroyed—every lust must be mortified and crucified—but whatever may glorify Him must be dedicated; in this way, its essential character is altered. God employs His servants in various ways: some, like David, in spiritual battles; others, like Solomon, in spiritual buildings; and one prepares work for the other, so that God may have the glory of all.