Hadare’zer (Hadad’s help), son of Rehob, 2 Sam. 8:3, the king of the Armite state of Zobah, who was pursued by David and defeated with great loss. 1 Chron. 18:3, 4. (b.c. 1035.) After the first repulse of the Ammonites and their Syrian allies by Joab, Hadarezer sent his army to the assistance of his kindred the people of Maachah, Rehob, and Ishtob. 1 Chron. 19:16; 2 Sam. 10:15, comp. 8. Under the command of Shophach or Shobach, the captain of the host, they crossed the Euphrates, joined the other Syrians, and encamped at a place called Helam. David himself came from Jerusalem to take the command of the Israelite army. As on the former occasion, the rout was complete.