1 Chronicles 11:4-6

4David and the whole Israelite army marched to attack Jerusalem. At that time, the city was called Jebus. The people who lived there were called Jebusites.

5The Jebusites said to David, ‘You will never get into our city.’ But David did get in and he took Zion, the city's strong place. It is now called the City of David.

6David had said to his soldiers, ‘The man who attacks the Jebusites first will become the captain of my army.’ Zeruiah's son Joab attacked first. So he became the captain of the army.