9 The king of Assyria complied by attacking Damascus and capturing it. He deported its inhabitants to Kir and put Rezin to death.

Read 2 Kings 16:9 Using Other Translations

And the king of Assyria hearkened unto him: for the king of Assyria went up against Damascus, and took it, and carried the people of it captive to Kir, and slew Rezin.
And the king of Assyria listened to him. The king of Assyria marched up against Damascus and took it, carrying its people captive to Kir, and he killed Rezin.
So the king of Assyria attacked the Aramean capital of Damascus and led its population away as captives, resettling them in Kir. He also killed King Rezin.