|Easton's Bible Dictionary|
Hadad is help; called also Hadarezer, Adod is his help, the king of Zobah. Hanun, the king of the Ammonites, hired among others the army of Hadadezer to assist him in his war against David. Joab, who was sent against this confederate host, found them in double battle array, the Ammonities toward their capital of Rabbah, and the Syrian mercenaries near Medeba. In the battle which was fought the Syrians were scattered, and the Ammonites in alarm fled into their capital. After this Hadadezer went north "to recover his border" (2 Samuel 8:3, A.V.); but rather, as the Revised Version renders, "to recover his dominion", i.e., to recruit his forces. Then followed another battle with the Syrian army thus recruited, which resulted in its being totally routed at Helam (2 Samuel 10:17). Shobach, the leader of the Syrian army, died on the field of battle. The Syrians of Damascus, who had come to help Hadadezer, were also routed, and Damascus was made tributary to David. All the spoils taken in this war, "shields of gold" and "very much brass," from which afterwards the "brasen sea, and the pillars, and the vessels of brass" for the temple were made (1 Chronicles 18:8), were brought to Jerusalem and dedicated to Jehovah. Thus the power of the Ammonites and the Syrians was finally broken, and David's empire extended to the Euphrates (2 Samuel 10:15-19; 1 Chronicles 19:15-19).
Int. Standard Bible Encyclopedia
had-ad-e'-zer (hadhadh`ezer; so 2 Samuel 8 1 Kings 11:23, but hadhar`ezer, 2 Samuel 10 1 Chronicles 18): Mentioned in connection with David's wars of conquest (2 Samuel 8:3 2 Samuel 10:1-19 1 Chronicles 18:3); was king of Zobah in Syria. The exact position and size of this Syrian principality are uncertain, but it seems to have extended in David's time southward toward Ammon and eastward to the Euphrates. When the Ammonites had put themselves in the wrong with David by the insult done to his ambassadors (2 Samuel 10:1-5) they summoned to their aid against the incensed king of Israel the Syrians of various adjoining principalities, among them the Syrians of Zobah under Hadadezer, the son of Rehob. The strategy of Joab, who set the force under command of Abishai his brother in array against the Ammonites, and himself attacked the Syrian allies, won for Israel a decisive victory. Not content with this result, Hadadezer gathered together another Syrian force, summoning this time also "the Syrians that were beyond the River" (2 Samuel 10:16), with Shobach the captain of his host at their head. On this occasion David himself took command of the Israelite forces and again defeated them near Helam, Shobach being left dead on the field. Hadadezer and his Syrian vassals, finding resistance hopeless, "made peace with Israel and served them" (2 Samuel 10:19). For the name Hadador Hadarezer, see BENHADAD.
Winckler, Geschichte Israels, I, 137; McCurdy, HPM, 204; Maspero, The Struggle of the Nations, 731.
Hadadezer (18 Occurrences)
2 Samuel 8:3 David struck also Hadadezer the son of Rehob, king of Zobah, as he went to recover his dominion at the River. (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)
2 Samuel 8:5 When the Syrians of Damascus came to help Hadadezer king of Zobah, David struck of the Syrians two and twenty thousand men. (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)
2 Samuel 8:7 David took the shields of gold that were on the servants of Hadadezer, and brought them to Jerusalem. (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)
2 Samuel 8:8 From Betah and from Berothai, cities of Hadadezer, king David took exceeding much brass. (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)
2 Samuel 8:9 When Toi king of Hamath heard that David had struck all the army of Hadadezer, (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)
2 Samuel 8:10 then Toi sent Joram his son to king David, to Greet him, and to bless him, because he had fought against Hadadezer and struck him: for Hadadezer had wars with Toi. Joram brought with him vessels of silver, and vessels of gold, and vessels of brass: (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)
2 Samuel 8:12 of Syria, and of Moab, and of the children of Ammon, and of the Philistines, and of Amalek, and of the spoil of Hadadezer, son of Rehob, king of Zobah. (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)
2 Samuel 10:16 Hadadezer sent, and brought out the Syrians who were beyond the River: and they came to Helam, with Shobach the captain of the army of Hadadezer at their head. (WEB JPS BBE YLT NAS NIV)
2 Samuel 10:19 When all the kings who were servants to Hadadezer saw that they were defeated before Israel, they made peace with Israel, and served them. So the Syrians feared to help the children of Ammon any more. (WEB JPS BBE YLT NAS NIV)
1 Kings 11:23 God raised up another adversary to him, Rezon the son of Eliada, who had fled from his lord Hadadezer king of Zobah. (WEB KJV JPS ASV BBE DBY WBS YLT NAS NIV)
1 Chronicles 18:3 David struck Hadadezer king of Zobah to Hamath, as he went to establish his dominion by the river Euphrates. (WEB BBE NAS NIV)
1 Chronicles 18:5 When the Syrians of Damascus came to help Hadadezer king of Zobah, David struck of the Syrians twenty-two thousand men. (WEB BBE NAS NIV)
1 Chronicles 18:7 David took the shields of gold that were on the servants of Hadadezer, and brought them to Jerusalem. (WEB BBE NAS NIV)
1 Chronicles 18:8 From Tibhath and from Cun, cities of Hadadezer, David took very much brass, with which Solomon made the bronze sea, and the pillars, and the vessels of brass. (WEB BBE NAS NIV)
1 Chronicles 18:9 When Tou king of Hamath heard that David had struck all the army of Hadadezer king of Zobah, (WEB BBE NAS NIV)
1 Chronicles 18:10 he sent Hadoram his son to king David, to Greet him, and to bless him, because he had fought against Hadadezer and struck him; (for Hadadezer had wars with Tou;) and he had with him all manner of vessels of gold and silver and brass. (WEB BBE NAS NIV)
1 Chronicles 19:16 When the Syrians saw that they were defeated by Israel, they sent messengers, and drew forth the Syrians who were beyond the River, with Shophach the captain of the army of Hadadezer at their head. (WEB BBE NAS NIV)
1 Chronicles 19:19 When the servants of Hadadezer saw that they were defeated by Israel, they made peace with David, and served him: neither would the Syrians help the children of Ammon any more. (WEB BBE NAS NIV)