Rezon
Rezon son of Eliada is a Syrian adversary raised up against Solomon. He breaks from his former lord, gathers a roving band, seizes Damascus, and remains a thorn in Israel's side throughout Solomon's reign.
Adversary Raised Up
Rezon enters the narrative as one of the disciplines God brings against Solomon: "And God raised up [another] adversary to him, Rezon the son of Eliada, who had fled from his lord Hadadezer king of Zobah" (1Ki 11:23). The flight from Hadadezer ties Rezon's beginnings to David's earlier campaigns — he is a survivor of a kingdom David broke.
Captain Over a Troop
Out of that displacement Rezon assembles a fighting band: "And he gathered men to him, and became captain over a troop, when David slew them [of Zobah]: and they went to Damascus, and dwelt in it, and reigned in Damascus" (1Ki 11:24). The seizure of Damascus turns a freebooter into a king, and roots a Syrian power on Israel's northern flank.
A Lifelong Adversary to Israel
The arc closes with a verdict on his reign: "And he was an adversary to Israel all the days of Solomon, besides the mischief that Hadad [did]: and he abhorred Israel, and reigned over Syria" (1Ki 11:25). Rezon and Hadad together frame Solomon's later years — outside pressures matching the inner drift of the king himself.