King of Damascus who paid tribute to Assyria in 738 BCE but later joined an alliance which included Israel to resist Assyria; but Ahaz of Judah, supported by Isaiah (Isa. 7: 1–10) rejected his overtures even when he attempted to impose his will by force. Rezin was executed by the Assyrians (2 Kgs. 16: 5–9) when the alliance was crushed.