David and all the Israelites marched to Jerusalem (that is, Jebus). The Jebusites who lived there
References for 1 Chronicles 11:4
said to David, “You will not get in here.” Nevertheless, David captured the fortress of Zion—which is the City of David.
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
David then took up residence in the fortress, and so it was called the City of David.
He built up the city around it, from the terraces to the surrounding wall, while Joab restored the rest of the city.
References for 1 Chronicles 11:8