Charles Ellicott Commentary 2 Samuel 8:10

"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:" — 2 Samuel 8:10 (ASV)

Joram (named Hadoram in 1 Chronicles 18:10). Joram is probably the Jewish form of the same name. An embassy headed by the king’s son was an especially honourable one. The occasion was David’s conquest of Toi’s neighbour and constant enemy, and the large presents sent by him have something of the character of tribute. The phrase “to bless him,” is simply equivalent to “congratulate him,” by which the same word is translated in 1 Chronicles 18:10.