5 said to David, “You will not get in here.” Nevertheless, David captured the fortress of Zion—which is the City of David.
6 David had said, “Whoever leads the attack on the Jebusites will become commander-in-chief.” Joab son of Zeruiah went up first, and so he received the command.
References for 1 Chronicles 11:6
7 David then took up residence in the fortress, and so it was called the City of David.
8 He built up the city around it, from the terracesa to the surrounding wall, while Joab restored the rest of the city.
References for 1 Chronicles 11:8
9 And David became more and more powerful, because the LORD Almighty was with him.
References for 1 Chronicles 11:9

David’s Mighty Warriors

10 These were the chiefs of David’s mighty warriors—they, together with all Israel, gave his kingship strong support to extend it over the whole land, as the LORD had promised—
References for 1 Chronicles 11:10
11 this is the list of David’s mighty warriors: Jashobeam,b a Hakmonite, was chief of the officersc ; he raised his spear against three hundred men, whom he killed in one encounter.
References for 1 Chronicles 11:11
    • © 11:11 - Possibly a variant of "Jashob-Baal"
    • ª 11:11 - Or "Thirty" ; some Septuagint manuscripts "Three" (see also 2 Samuel 23:8)
      12 Next to him was Eleazar son of Dodai the Ahohite, one of the three mighty warriors.
      13 He was with David at Pas Dammim when the Philistines gathered there for battle. At a place where there was a field full of barley, the troops fled from the Philistines.
      14 But they took their stand in the middle of the field. They defended it and struck the Philistines down, and the LORD brought about a great victory.
      References for 1 Chronicles 11:14
      15 Three of the thirty chiefs came down to David to the rock at the cave of Adullam, while a band of Philistines was encamped in the Valley of Rephaim.
      References for 1 Chronicles 11:15