David defeats the Philistines and takes Gath and its villages. He also defeats Moab, and the Moabites become subject to David and pay tribute. Then he defeats Hadadezer, king of Zobah, as the latter was going to extend his dominion to the river Euphrates. David captures from him a thousand chariots, seven thousand horsemen and twenty thousand foot soldiers, and hamstrings all the chariot horses except a hundred. The Arameans of Damascus come to help Hadadezer, but David strikes down twenty-two thousand of them and puts garrisons in Aram. The Arameans become servants and pay tribute, and the Lord gives David victory wherever he goes.
David takes the golden shields of Hadadezer's servants and brings them to Jerusalem, and from the cities of Tibhath and Cun he takes a great amount of bronze, which Solomon will later use for the bronze sea, the pillars and the utensils of the temple. When Tou, king of Hamath, hears that David has defeated Hadadezer, he sends his son Hadoram to greet him and congratulate him, with gifts of gold, silver and bronze. David dedicates everything to the Lord, together with the silver and gold he had taken from all the nations: Edom, Moab, the Ammonites, the Philistines and Amalek.
Abishai, the son of Zeruiah, strikes down eighteen thousand Edomites in the Valley of Salt, and David puts garrisons in Edom. So David reigns over all Israel and does justice and righteousness for all his people. The chapter closes with his chief officials: Joab as commander of the army, Jehoshaphat as recorder, Zadok and Ahimelech as priests, Shavsha as secretary and Benaiah in charge of the Cherethites and Pelethites.