to.u is the proper name of the king of Hamath who hears of David’s victory over Hadadezer and sends his son.

The term is used as a proper personal name for the king of Hamath: he hears that David has defeated Hadadezer and sends his son to David with greetings, blessing, and valuable articles.

1. Personal name of Hamath’s king · dominant

   All occurrences are tagged as a proper noun. In 2 Samuel 8:9 and 1 Chronicles 18:9, the APB renders the name in the clause identifying the king of Hamath who hears of David’s defeat of Hadadezer; in 2 Samuel 8:10 and 1 Chronicles 18:10, it identifies the ruler whose son is sent to David after that conflict.

   2 Samuel 8:92 Samuel 8:101 Chronicles 18:91 Chronicles 18:10

In the Anselm Project Bible: The APB presents the term as “Toi” throughout the cited verses, identifying the king of Hamath and the ruler connected with the embassy sent to David. The verse is read as a whole, but the proper-name use is clear from the clauses.