Isaiah 9:11
"Therefore the LORD shall set up the adversaries of Rezin against him, and join his enemies together;"
Cross References (ranked by relevance)
2 Kings 16:9
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.
2 Kings 15:29
In the days of Pekah king of Israel came Tiglathpileser king of Assyria, and took Ijon, and Abelbethmaachah, and Janoah, and Kedesh, and Hazor, and Gilead, and Galilee, all the land of Naphtali, and carried them captive to Assyria.
Isaiah 7:8
For the head of Syria is Damascus, and the head of Damascus is Rezin; and within threescore and five years shall Ephraim be broken, that it be not a people.