1 Chronicles 11:7-9
7-9David took up residence in the fortress city; that's how it got its name, "City of David." David fortified the city all the way around, both the outer bulwarks (the Millo) and the outside wall. Joab rebuilt the city gates. David's stride became longer, his embrace larger—yes, God-of-the-Angel-Armies was with him!
David's Mighty Men
10-11These are the chiefs of David's Mighty Men, the ones who linked arms with him as he took up his kingship, with all Israel joining in, helping him become king in just the way God had spoken regarding Israel. The list of David's Mighty Men:
Jashobeam son of Hacmoni was chief of the Thirty. Singlehandedly he killed three hundred men, killed them all in one skirmish.